//www.getgobooth.com/ 必威体育下载 daily 15 2024-08-20 10:33:36 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-08-20 10:33:36 zh Copyright ©Acta Physica Sinica All Rights Reserved. 京ICP备05002789号-1 Address: PostCode：100190 Phone: 010-82649829，82649241,82649863 Email: apsoffice@iphy.ac.cn Copyright ©Acta Physica Sinica All Rights Reserved apsoffice@iphy.ac.cn 1000-3290 //www.getgobooth.com/en/article/doi/10.7498/aps.47.705 Author(s): DUAN WEN-SHAN, Lv KE-PU, WANG BEN-REN, WEI RONG-JUE <br/><p>Transmission and reflection of soliton in an inhomogeneous plasma are investigated, the transmission and reflection waves both can be described by the KdV equation in the lowest order. The numbers and magnitude of both transmitted and reflected solitons from an incident soliton are given analytically.</p> <br/>Acta Physica Sinica. 1998 47(5): 705-711. Published 1998-05-20 Author(s): DUAN WEN-SHAN, Lv KE-PU, WANG BEN-REN, WEI RONG-JUE <br/><p>Transmission and reflection of soliton in an inhomogeneous plasma are investigated, the transmission and reflection waves both can be described by the KdV equation in the lowest order. The numbers and magnitude of both transmitted and reflected solitons from an incident soliton are given analytically.</p> <br/>Acta Physica Sinica. 1998 47(5): 705-711. Published 1998-05-20 TRANSMISSION AND REFLECTION OF SOLITON IN AN INHOMOGENEOUS PLASMA DUAN WEN-SHAN, Lv KE-PU, WANG BEN-REN, WEI RONG-JUE 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 705-711. article doi:10.7498/aps.47.705 10.7498/aps.47.705 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.705 705-711 //www.getgobooth.com/en/article/doi/10.7498/aps.47.712 Author(s): LI BO-ZANG, HOU BANG-PIN, YU WAN-LUN <br/><p>New concepts are proposed on the pure states and quantum systems of Berry type, of which the properties and signifieance are discussed. In addition, we point out that an adiabatic system can be approximately regarded as a quantum system of complete Berry type.</p> <br/>Acta Physica Sinica. 1998 47(5): 712-717. Published 1998-05-20 Author(s): LI BO-ZANG, HOU BANG-PIN, YU WAN-LUN <br/><p>New concepts are proposed on the pure states and quantum systems of Berry type, of which the properties and signifieance are discussed. In addition, we point out that an adiabatic system can be approximately regarded as a quantum system of complete Berry type.</p> <br/>Acta Physica Sinica. 1998 47(5): 712-717. Published 1998-05-20 PURE STATES AND QUANTUM SYSTEMS OF BERRY TYPE LI BO-ZANG, HOU BANG-PIN, YU WAN-LUN 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 712-717. article doi:10.7498/aps.47.712 10.7498/aps.47.712 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.712 712-717 //www.getgobooth.com/en/article/doi/10.7498/aps.47.718 Author(s): TIAN XU, HUANG XIANG-YOU <br/><p>Decoupled squeezed states for the Landau System (planar charged particle moving in a uniform magnetic field) are builded. It is convenient to use these states to describe the circular motion of the charged particle. The results obtained do not depend on gauges.</p> <br/>Acta Physica Sinica. 1998 47(5): 718-723. Published 1998-05-20 Author(s): TIAN XU, HUANG XIANG-YOU <br/><p>Decoupled squeezed states for the Landau System (planar charged particle moving in a uniform magnetic field) are builded. It is convenient to use these states to describe the circular motion of the charged particle. The results obtained do not depend on gauges.</p> <br/>Acta Physica Sinica. 1998 47(5): 718-723. Published 1998-05-20 DECOUPLED SQUEEZED LANDAU STATES TIAN XU, HUANG XIANG-YOU 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 718-723. article doi:10.7498/aps.47.718 10.7498/aps.47.718 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.718 718-723 //www.getgobooth.com/en/article/doi/10.7498/aps.47.724 Author(s): WU SHENG-MIAO, ZHANG JING-YI <br/><p>In this paper the explicit form of composite transformation of n successive Lorentz transformation was obtained, from which the transformation from accelerating system to inertial one was deduced, and the application range of Mller transformation was extended.</p> <br/>Acta Physica Sinica. 1998 47(5): 724-727. Published 1998-05-20 Author(s): WU SHENG-MIAO, ZHANG JING-YI <br/><p>In this paper the explicit form of composite transformation of n successive Lorentz transformation was obtained, from which the transformation from accelerating system to inertial one was deduced, and the application range of Mller transformation was extended.</p> <br/>Acta Physica Sinica. 1998 47(5): 724-727. Published 1998-05-20 A NEW METHOD FOR OBTAINING MLLER TRANSFORMATION WU SHENG-MIAO, ZHANG JING-YI 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 724-727. article doi:10.7498/aps.47.724 10.7498/aps.47.724 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.724 724-727 //www.getgobooth.com/en/article/doi/10.7498/aps.47.728 Author(s): BU HE, LIU LIAO <br/><p>We find a closed cosmological solution for small scale factor in the semi-classical Brans-Dicke theory. The model has an initial space-like curvature singularity.</p> <br/>Acta Physica Sinica. 1998 47(5): 728-731. Published 1998-05-20 Author(s): BU HE, LIU LIAO <br/><p>We find a closed cosmological solution for small scale factor in the semi-classical Brans-Dicke theory. The model has an initial space-like curvature singularity.</p> <br/>Acta Physica Sinica. 1998 47(5): 728-731. Published 1998-05-20 A CLOSED COSMOLOGICAL SOLUTION IN SEMI-CLASSICAL BRANS-DICKE'S THEORY BU HE, LIU LIAO 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 728-731. article doi:10.7498/aps.47.728 10.7498/aps.47.728 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.728 728-731 //www.getgobooth.com/en/article/doi/10.7498/aps.47.732 Author(s): GU CHUN-MING, SHEN KE <br/><p>A new method of controlling chaos of a laser diode by all external optical feedback was proposed according to the principle of Pyragas' method; the conditions in which the method can be used were given from theoritical analysis based on the coherence theory, and the results of the computer simulation proved that this method was efficient.</p> <br/>Acta Physica Sinica. 1998 47(5): 732-737. Published 1998-05-20 Author(s): GU CHUN-MING, SHEN KE <br/><p>A new method of controlling chaos of a laser diode by all external optical feedback was proposed according to the principle of Pyragas' method; the conditions in which the method can be used were given from theoritical analysis based on the coherence theory, and the results of the computer simulation proved that this method was efficient.</p> <br/>Acta Physica Sinica. 1998 47(5): 732-737. Published 1998-05-20 CONTROLLING CHAOTIC BEHAVIOR OF A LASER DIODE BY ALL EXTERNAL OPTICAL FEEDBACK GU CHUN-MING, SHEN KE 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 732-737. article doi:10.7498/aps.47.732 10.7498/aps.47.732 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.732 732-737 //www.getgobooth.com/en/article/doi/10.7498/aps.47.738 Author(s): FENG RONG, ZOU YU, FANG QUAN-YU <br/><p>The effects of free electrons in a plasma on a complex atom are discussed, here we are interested in the target ionAu50+ in inertia confined fusion(ICF). The results are compared with those in the case of hydrogenic ions. Accurate numerical solutions have been obtained for Schrdinger's equation through Debye screened Hartree-Fock-Slater self-consistent potential. Solutions have been computed for 28 eigenstates, 1s through n=7, l=6,yielding the energy eigenvalues for a wide range of Debye screening length Λ. As in the case of hydrogenic ions, under screening, all energy levels are shifted away from their unscreened values toward the continuum, that is, the ionization limits are shifted downward. Conclusions have been made that when Λ＞5a0， that is, in the weak screening case, Debye screening has little effect on oscillator strength, average obital radius, transition matrix elements, etc., of Au50+. For each (n,l) eigenstate, there is a finite value of screening length Λ0(n,l), for which the energy becomes zero. When Λ is sufficiently small, level crossing appears at high n satets. Optical oscillator strength for Au50+ has also been calculated, the results are compared with those under unscreened potential.</p> <br/>Acta Physica Sinica. 1998 47(5): 738-746. Published 1998-05-20 Author(s): FENG RONG, ZOU YU, FANG QUAN-YU <br/><p>The effects of free electrons in a plasma on a complex atom are discussed, here we are interested in the target ionAu50+ in inertia confined fusion(ICF). The results are compared with those in the case of hydrogenic ions. Accurate numerical solutions have been obtained for Schrdinger's equation through Debye screened Hartree-Fock-Slater self-consistent potential. Solutions have been computed for 28 eigenstates, 1s through n=7, l=6,yielding the energy eigenvalues for a wide range of Debye screening length Λ. As in the case of hydrogenic ions, under screening, all energy levels are shifted away from their unscreened values toward the continuum, that is, the ionization limits are shifted downward. Conclusions have been made that when Λ＞5a0， that is, in the weak screening case, Debye screening has little effect on oscillator strength, average obital radius, transition matrix elements, etc., of Au50+. For each (n,l) eigenstate, there is a finite value of screening length Λ0(n,l), for which the energy becomes zero. When Λ is sufficiently small, level crossing appears at high n satets. Optical oscillator strength for Au50+ has also been calculated, the results are compared with those under unscreened potential.</p> <br/>Acta Physica Sinica. 1998 47(5): 738-746. Published 1998-05-20 THE ENERGY LEVELS AND OSCILLATOR STRENGTH OF A COMPLEX ATOM——Au50+ IN ASELF-CONSISTENT POTENTIAL FENG RONG, ZOU YU, FANG QUAN-YU 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 738-746. article doi:10.7498/aps.47.738 10.7498/aps.47.738 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.738 738-746 //www.getgobooth.com/en/article/doi/10.7498/aps.47.747 Author(s): WANG JIN-GUO, ZHANG ZHI-GUO, XU JI-REN, FU PAN-MING, YAN XIU-LI, WU XING, JIANG YAN-DAO <br/><p>Upconversion fluorescence near 553 and 410nm was detected when the Er3+-doped yttrium vanadate (Er3+∶YVO4) crystal was excited with a 808nm-diode laser and a 658nm-dye laser. Analysis of excitation mechanism shows that excited state absorption dominantly contributes to the upconversion emissions. Measurement of lifetimes for different Er3+ concentration indicates that the lifetime of 553nm emission decreases with increasing Er3+ concentration, but no considerable changes of that of 410nm emission have been observed. With the consideration of the fact that the intensity of 553nm band declines with increasing Er3+ concentration, we argue that in the concentration range measured there is an appreciable concentration quenching in the 553nm emission, and a dominant population channel of its upper state (4S3/2) is the nonradiative relaxation from the upper state (2H9/2) of the 410nm band.</p> <br/>Acta Physica Sinica. 1998 47(5): 747-755. Published 1998-05-20 Author(s): WANG JIN-GUO, ZHANG ZHI-GUO, XU JI-REN, FU PAN-MING, YAN XIU-LI, WU XING, JIANG YAN-DAO <br/><p>Upconversion fluorescence near 553 and 410nm was detected when the Er3+-doped yttrium vanadate (Er3+∶YVO4) crystal was excited with a 808nm-diode laser and a 658nm-dye laser. Analysis of excitation mechanism shows that excited state absorption dominantly contributes to the upconversion emissions. Measurement of lifetimes for different Er3+ concentration indicates that the lifetime of 553nm emission decreases with increasing Er3+ concentration, but no considerable changes of that of 410nm emission have been observed. With the consideration of the fact that the intensity of 553nm band declines with increasing Er3+ concentration, we argue that in the concentration range measured there is an appreciable concentration quenching in the 553nm emission, and a dominant population channel of its upper state (4S3/2) is the nonradiative relaxation from the upper state (2H9/2) of the 410nm band.</p> <br/>Acta Physica Sinica. 1998 47(5): 747-755. Published 1998-05-20 STUDY ON UPCONVERSION FLUORESCENCE OF Er3+-DOPED YTTRIUM VANADATE WANG JIN-GUO, ZHANG ZHI-GUO, XU JI-REN, FU PAN-MING, YAN XIU-LI, WU XING, JIANG YAN-DAO 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 747-755. article doi:10.7498/aps.47.747 10.7498/aps.47.747 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.747 747-755 //www.getgobooth.com/en/article/doi/10.7498/aps.47.756 Author(s): HUANG WEN-JIN, HUANG HU, LI SHI-QUN <br/><p>In this paper we derive the Fokker-Planck equation of a closed lasing system by using ordering techniques of operators, reduce it to an equation including merely field variables, and then obtain the Q function of the laser field. Through analyzing the Q function, we discover that,at the operating point, the dynamic behavior of the dipole moment between the lasing levels decisively influences the quantum statistical properties of the laser field. Under certain conditions we obtain a clear picture about the influence. The conclusion can be applied to a variety of laser systems, including those without inversion.</p> <br/>Acta Physica Sinica. 1998 47(5): 756-764. Published 1998-05-20 Author(s): HUANG WEN-JIN, HUANG HU, LI SHI-QUN <br/><p>In this paper we derive the Fokker-Planck equation of a closed lasing system by using ordering techniques of operators, reduce it to an equation including merely field variables, and then obtain the Q function of the laser field. Through analyzing the Q function, we discover that,at the operating point, the dynamic behavior of the dipole moment between the lasing levels decisively influences the quantum statistical properties of the laser field. Under certain conditions we obtain a clear picture about the influence. The conclusion can be applied to a variety of laser systems, including those without inversion.</p> <br/>Acta Physica Sinica. 1998 47(5): 756-764. Published 1998-05-20 DECISIVE INFLUENCE OF THE DYNAMIC BEHAVIOR OF THE ATOMIC DIPOLE MOMENT ON THE QUANTUM STATISTICAL PROPERTIES OF LASER FIELD HUANG WEN-JIN, HUANG HU, LI SHI-QUN 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 756-764. article doi:10.7498/aps.47.756 10.7498/aps.47.756 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.756 756-764 //www.getgobooth.com/en/article/doi/10.7498/aps.47.765 Author(s): GAO YI-HUA, ZHANG ZE, YAN MING-LANG, LAI WU-YAN <br/><p>The ［(Ni80Fe20)1.4nm/Moxnm］30 magnetic multilayers(x=0.7,1.6,2.1) have been investigated by selected area electron diffraction and high resolution electron microscopy (HREM).It is revealed that:(a) The structure of the NiFe/Mo multilayer changes with the increase of the thickness of Mo spacer-layer. The NiFe and Mo layers are mainly amorphous as the Mo spacer is 0.7 nm in thickness, and crystallized into polycrystalline fcc NiFe and bcc Mo layers as the Mo spacer is thicker than 1.6nm. (b) For the multilayers with Mo spacer of 1.6nm and 2.1nm in thickness , there are two types of orientation relationship between the fcc NiFe and bcc Mo:(110)Mo∥(111)NiFe，［111］Mo∥［110］NiFeand(110)Mo∥(111)NiFe，［001］Mo∥［110］NiFe.(c) The NiFe /Mo interfaces are sharp in case (b) but the lattice spacing varies near the interface region as the lattice spacing of NiFe expands and that of Mo contracts with respect to their bulk counterparts. The variation of lattice spacing near the interfacial region has been discussed and the absence of giant magneto-resistance has been interpreted by the structural characteristics of the multilayers.</p> <br/>Acta Physica Sinica. 1998 47(5): 765-777. Published 1998-05-20 Author(s): GAO YI-HUA, ZHANG ZE, YAN MING-LANG, LAI WU-YAN <br/><p>The ［(Ni80Fe20)1.4nm/Moxnm］30 magnetic multilayers(x=0.7,1.6,2.1) have been investigated by selected area electron diffraction and high resolution electron microscopy (HREM).It is revealed that:(a) The structure of the NiFe/Mo multilayer changes with the increase of the thickness of Mo spacer-layer. The NiFe and Mo layers are mainly amorphous as the Mo spacer is 0.7 nm in thickness, and crystallized into polycrystalline fcc NiFe and bcc Mo layers as the Mo spacer is thicker than 1.6nm. (b) For the multilayers with Mo spacer of 1.6nm and 2.1nm in thickness , there are two types of orientation relationship between the fcc NiFe and bcc Mo:(110)Mo∥(111)NiFe，［111］Mo∥［110］NiFeand(110)Mo∥(111)NiFe，［001］Mo∥［110］NiFe.(c) The NiFe /Mo interfaces are sharp in case (b) but the lattice spacing varies near the interface region as the lattice spacing of NiFe expands and that of Mo contracts with respect to their bulk counterparts. The variation of lattice spacing near the interfacial region has been discussed and the absence of giant magneto-resistance has been interpreted by the structural characteristics of the multilayers.</p> <br/>Acta Physica Sinica. 1998 47(5): 765-777. Published 1998-05-20 HREM STUDY OF THE INTERFACIAL STRUCTURE OF NiFe/Mo MAGNETIC MULTILAYERS GAO YI-HUA, ZHANG ZE, YAN MING-LANG, LAI WU-YAN 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 765-777. article doi:10.7498/aps.47.765 10.7498/aps.47.765 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.765 765-777 //www.getgobooth.com/en/article/doi/10.7498/aps.47.778 Author(s): LIU YONG-SONG, SHUI JIA-PENG <br/><p>The phase transition of liquid crystal carboxylate is studied by using low-frequency internal friction method, under forced-vibration mode. A relationship between the height of the peak of internal friction and the vibration frequency is derived with a simple viscoelastical Maxwell model; it shows a nonlinear feature. The experimental result agrees with this relationship.</p> <br/>Acta Physica Sinica. 1998 47(5): 778-783. Published 1998-05-20 Author(s): LIU YONG-SONG, SHUI JIA-PENG <br/><p>The phase transition of liquid crystal carboxylate is studied by using low-frequency internal friction method, under forced-vibration mode. A relationship between the height of the peak of internal friction and the vibration frequency is derived with a simple viscoelastical Maxwell model; it shows a nonlinear feature. The experimental result agrees with this relationship.</p> <br/>Acta Physica Sinica. 1998 47(5): 778-783. Published 1998-05-20 FREQUENCY DEPENDENCE ON INTERNAL FRICTION PEAK ASSOCIATED WITH PHASE TRANSITION OF LIQUID CRYSTAL CARBOXYLATE LIU YONG-SONG, SHUI JIA-PENG 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 778-783. article doi:10.7498/aps.47.778 10.7498/aps.47.778 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.778 778-783 //www.getgobooth.com/en/article/doi/10.7498/aps.47.784 Author(s): ZHU ZI-ZHONG <br/><p>The vacancy formation energy in metal Al have been computed by a first-principles pseudopotential method. The dependence of the calculated vacancy formation energy on the supercell size and k point sampling set have been studied in detail. Our results show that the atomic sites in the supercell should reach about 100 in order to have a convergent theoretical value for the vacancy formation energy in Al. The theoretical value using a supercell of 108 atomic sites is in excellent agreement with experimental data.</p> <br/>Acta Physica Sinica. 1998 47(5): 784-789. Published 1998-05-20 Author(s): ZHU ZI-ZHONG <br/><p>The vacancy formation energy in metal Al have been computed by a first-principles pseudopotential method. The dependence of the calculated vacancy formation energy on the supercell size and k point sampling set have been studied in detail. Our results show that the atomic sites in the supercell should reach about 100 in order to have a convergent theoretical value for the vacancy formation energy in Al. The theoretical value using a supercell of 108 atomic sites is in excellent agreement with experimental data.</p> <br/>Acta Physica Sinica. 1998 47(5): 784-789. Published 1998-05-20 DEPENDENCE OF THE AB INITIO VACANCY FORMATION ENERGY IN METAL ALUMINUM ON THE UNIT CELL SIZE ZHU ZI-ZHONG 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 784-789. article doi:10.7498/aps.47.784 10.7498/aps.47.784 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.784 784-789 //www.getgobooth.com/en/article/doi/10.7498/aps.47.790 Author(s): LI LI-JUN, WU JIN-LEI <br/><p>In this paper the ultraviolet—visible photoabsorption spectrum of the complex thin films of noble metal (Au,Cu) particles embedded in BaO matrix is measured.The absorption spectra of the two kinds of films are quite different.There are surface plasmon mode and band transition absorption in the spectrum of the Au-BaO thin film.However,several peaks appear in the spectrum of the Cu-BaO thin film,because Cu exists as very small particles in the matrix.The absorption spectrum is dependent on the metal content.</p> <br/>Acta Physica Sinica. 1998 47(5): 790-795. Published 1998-05-20 Author(s): LI LI-JUN, WU JIN-LEI <br/><p>In this paper the ultraviolet—visible photoabsorption spectrum of the complex thin films of noble metal (Au,Cu) particles embedded in BaO matrix is measured.The absorption spectra of the two kinds of films are quite different.There are surface plasmon mode and band transition absorption in the spectrum of the Au-BaO thin film.However,several peaks appear in the spectrum of the Cu-BaO thin film,because Cu exists as very small particles in the matrix.The absorption spectrum is dependent on the metal content.</p> <br/>Acta Physica Sinica. 1998 47(5): 790-795. Published 1998-05-20 PHOTOABSORPTION OF COMPLEX THIN FILMS OF NOBLE METAL PARTICLES EMBEDDED IN MATRIX (Au-BaO,Cu-BaO) LI LI-JUN, WU JIN-LEI 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 790-795. article doi:10.7498/aps.47.790 10.7498/aps.47.790 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.790 790-795 //www.getgobooth.com/en/article/doi/10.7498/aps.47.796 Author(s): CHEN JIAN-XIN, LI AI-ZHEN, REN YAO-CHENG, K.FRIEDLAND <br/><p>Shubnikov-de Haas (SdH) oscillation and quantum Hall effect measurements on pseudomorphic InGaAs/InAlAs modulation doped heterostructure,grown by gas source molecular beam epitaxy,have been carried out to investigate the magetotransport properties of the two-dimensional electron gas in the strained InGaAs quantum well.The SdH measurements at 0.3K demonstrated the existence of a quasi-two-dimensional electron gas in the pseudomorphic InGaAs/InAlAs heterostructure.The fast Fourier transformation results for the SdH data clearly indicate the occupation of two subbands in InGaAs strained quantum well.Comparison between SdH data on the structure with undoped InGaAs cap layer and the structure with heavily Si doped cap layer reveals that different doping in cap layer has large effect on the parallel conductance of the modulation doped structure.</p> <br/>Acta Physica Sinica. 1998 47(5): 796-801. Published 1998-05-20 Author(s): CHEN JIAN-XIN, LI AI-ZHEN, REN YAO-CHENG, K.FRIEDLAND <br/><p>Shubnikov-de Haas (SdH) oscillation and quantum Hall effect measurements on pseudomorphic InGaAs/InAlAs modulation doped heterostructure,grown by gas source molecular beam epitaxy,have been carried out to investigate the magetotransport properties of the two-dimensional electron gas in the strained InGaAs quantum well.The SdH measurements at 0.3K demonstrated the existence of a quasi-two-dimensional electron gas in the pseudomorphic InGaAs/InAlAs heterostructure.The fast Fourier transformation results for the SdH data clearly indicate the occupation of two subbands in InGaAs strained quantum well.Comparison between SdH data on the structure with undoped InGaAs cap layer and the structure with heavily Si doped cap layer reveals that different doping in cap layer has large effect on the parallel conductance of the modulation doped structure.</p> <br/>Acta Physica Sinica. 1998 47(5): 796-801. Published 1998-05-20 SHUBNIKOV-DE HAAS OSCILLATIONS IN PSEUDOMORPHIC MODULATION-DOPED InGaAs/InAlAs HETEROSTRUCTURE CHEN JIAN-XIN, LI AI-ZHEN, REN YAO-CHENG, K.FRIEDLAND 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 796-801. article doi:10.7498/aps.47.796 10.7498/aps.47.796 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.796 796-801 //www.getgobooth.com/en/article/doi/10.7498/aps.47.802 Author(s): OUYANG MIN, HOU SHI-MIN, LIN LIN, LIU WEI-MIN, XUE ZENG-QUAN, WU QUAN-DE, XIA ZONG-JU, ZOU YING-HUA <br/><p>Two kinds of metal-organic complex thin films Ag-TCNQ and Ag-BDCB have been prepared by the modified thermal evaporation method.transimssion electron microscopy (TEM) and ultraviolet—visible (UV—Vis) spectroscopy were applied to the study of the structures of the metal-organic complex thin films.The TEM and UV—Vis spectroscopic results show that the two kinds of thin films belong to the system of metallic clusters embedded in π-conjugated organic media.</p> <br/>Acta Physica Sinica. 1998 47(5): 802-806. Published 1998-05-20 Author(s): OUYANG MIN, HOU SHI-MIN, LIN LIN, LIU WEI-MIN, XUE ZENG-QUAN, WU QUAN-DE, XIA ZONG-JU, ZOU YING-HUA <br/><p>Two kinds of metal-organic complex thin films Ag-TCNQ and Ag-BDCB have been prepared by the modified thermal evaporation method.transimssion electron microscopy (TEM) and ultraviolet—visible (UV—Vis) spectroscopy were applied to the study of the structures of the metal-organic complex thin films.The TEM and UV—Vis spectroscopic results show that the two kinds of thin films belong to the system of metallic clusters embedded in π-conjugated organic media.</p> <br/>Acta Physica Sinica. 1998 47(5): 802-806. Published 1998-05-20 STUDY OF STRUCTURE OF METALLIC CLUSTERS EMBEDDED IN ORGANIC THIN FILM (I) OUYANG MIN, HOU SHI-MIN, LIN LIN, LIU WEI-MIN, XUE ZENG-QUAN, WU QUAN-DE, XIA ZONG-JU, ZOU YING-HUA 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 802-806. article doi:10.7498/aps.47.802 10.7498/aps.47.802 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.802 802-806 //www.getgobooth.com/en/article/doi/10.7498/aps.47.807 Author(s): ZHOU SHI-PING, XU KE-XI, NIU JIN-HAI <br/><p>We present descriptions of the pairing symmetry in high-temperature superconductors.Analysis of the Josephson tunneling experiments based on the asymptotic s±id state has, to some extend,demonstrated the validity of the model,and the comparison of the theoretical calculations with the dichromatic observations in this kind of material has been in favor of the Γ1+Γ4 representation argument.The possible appearance of the fractional quantum flux vortex related to the specific mixed pairing symmetry has also been discussed.</p> <br/>Acta Physica Sinica. 1998 47(5): 807-816. Published 1998-05-20 Author(s): ZHOU SHI-PING, XU KE-XI, NIU JIN-HAI <br/><p>We present descriptions of the pairing symmetry in high-temperature superconductors.Analysis of the Josephson tunneling experiments based on the asymptotic s±id state has, to some extend,demonstrated the validity of the model,and the comparison of the theoretical calculations with the dichromatic observations in this kind of material has been in favor of the Γ1+Γ4 representation argument.The possible appearance of the fractional quantum flux vortex related to the specific mixed pairing symmetry has also been discussed.</p> <br/>Acta Physica Sinica. 1998 47(5): 807-816. Published 1998-05-20 THE TUNNELING CURRENT AND THE DICHROMATIC EFFECT IN RELATION TO THE MIXED PAIRING SYMMETRY STATE IN HIGH-TEMPERATURE SUPERCONDUCTORS ZHOU SHI-PING, XU KE-XI, NIU JIN-HAI 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 807-816. article doi:10.7498/aps.47.807 10.7498/aps.47.807 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.807 807-816 //www.getgobooth.com/en/article/doi/10.7498/aps.47.817 Author(s): ZHANG LI-GANG, SHEN BAO-GEN, ZHANG SHAO-YING, ZHANG HONG-WEI <br/><p>Structural and magnetic properties of Er2(Fe1-xCox)15Ga2 compounds with x=0-1.0 were investigated by means of X-ray diffraction and magnetization measurements.X-ray diffraction patterns demonstrate that all samples are single phase with the hexagonal Th2Ni17-type structure.The lattice parameters a,c and the unit cell volumes V are found to decrease linearly with increasing Co concentration.With increasing Co content the saturation magnetization decreases while,but the Curie temperature increases monotonically.The substitution of Co for Fe has a significant effect on the magnetocrystalline anisotropy,and changes the easy magnetization direction from the basal plane to the c-axis at room temperature for x lying between 0.2 and 0.4.The spin reorientation transitions are observed for x＜0.5.The spin reorientation temperature Tsr increases with increasing Co concentration from 127.8K for x=0 to 558K for x=0.4.</p> <br/>Acta Physica Sinica. 1998 47(5): 817-823. Published 1998-05-20 Author(s): ZHANG LI-GANG, SHEN BAO-GEN, ZHANG SHAO-YING, ZHANG HONG-WEI <br/><p>Structural and magnetic properties of Er2(Fe1-xCox)15Ga2 compounds with x=0-1.0 were investigated by means of X-ray diffraction and magnetization measurements.X-ray diffraction patterns demonstrate that all samples are single phase with the hexagonal Th2Ni17-type structure.The lattice parameters a,c and the unit cell volumes V are found to decrease linearly with increasing Co concentration.With increasing Co content the saturation magnetization decreases while,but the Curie temperature increases monotonically.The substitution of Co for Fe has a significant effect on the magnetocrystalline anisotropy,and changes the easy magnetization direction from the basal plane to the c-axis at room temperature for x lying between 0.2 and 0.4.The spin reorientation transitions are observed for x＜0.5.The spin reorientation temperature Tsr increases with increasing Co concentration from 127.8K for x=0 to 558K for x=0.4.</p> <br/>Acta Physica Sinica. 1998 47(5): 817-823. Published 1998-05-20 MAGNETOCRYSTALLINE ANISOTROPY OF Er2(Fe1-xCox)15Ga2 COMPOUNDS ZHANG LI-GANG, SHEN BAO-GEN, ZHANG SHAO-YING, ZHANG HONG-WEI 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 817-823. article doi:10.7498/aps.47.817 10.7498/aps.47.817 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.817 817-823 //www.getgobooth.com/en/article/doi/10.7498/aps.47.824 Author(s): SUN HUI-YUAN, TANG GUI-DE, GUO GE-XIN, NIE XIANG-FU, WANG YUAN-FEI, HAN BAO-SHAN <br/><p>Spontaneous shrinking of the second type of dumbbell domains (IID) subjected to both static bias field (Hb) and in-plane field (Hip) were investigated experimentally.It was found that this phenomenon depends on the amplitude,as well as the direction of Hip.In terms of a series of photographs,it was shown that the spontaneous shrinking of those IIDs perpendicular to Hip occurs earlier,and the spontaneous shrinking of those IIDs parallel to Hip occurs later.In addition,it was confirmed that IIDs lose a part of vertical Bloch lines (VBLs) in their walls in the process of spontaneous shrinking.</p> <br/>Acta Physica Sinica. 1998 47(5): 824-828. Published 1998-05-20 Author(s): SUN HUI-YUAN, TANG GUI-DE, GUO GE-XIN, NIE XIANG-FU, WANG YUAN-FEI, HAN BAO-SHAN <br/><p>Spontaneous shrinking of the second type of dumbbell domains (IID) subjected to both static bias field (Hb) and in-plane field (Hip) were investigated experimentally.It was found that this phenomenon depends on the amplitude,as well as the direction of Hip.In terms of a series of photographs,it was shown that the spontaneous shrinking of those IIDs perpendicular to Hip occurs earlier,and the spontaneous shrinking of those IIDs parallel to Hip occurs later.In addition,it was confirmed that IIDs lose a part of vertical Bloch lines (VBLs) in their walls in the process of spontaneous shrinking.</p> <br/>Acta Physica Sinica. 1998 47(5): 824-828. Published 1998-05-20 SPONTANEOUS SHRINKING OF THE SECOND TYPE OF DUMBBELL DOMAINS SUBJECTED TO BOTH STATIC BIAS FIELD AND IN-PLANE FIELD SUN HUI-YUAN, TANG GUI-DE, GUO GE-XIN, NIE XIANG-FU, WANG YUAN-FEI, HAN BAO-SHAN 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 824-828. article doi:10.7498/aps.47.824 10.7498/aps.47.824 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.824 824-828 //www.getgobooth.com/en/article/doi/10.7498/aps.47.829 Author(s): OUYANG MIN, HOU SHI-MIN, LIN LIN, LIU WEI-MIN, XUE ZENG-QUAN, WU QUAN-DE, XIA ZONG-JU, ZOU YING-HUA <br/><p>The electrical bistability of the two kinds of complex thin films Ag-TCNQ and Ag-BDCB was discussed,which were films of metallic clusters embedded in π-conjugated organic media.And infrared spectroscopy was applied to the study of the mechanism.The pump-probe method was used to study the transient response of these two kinds of thin films, the therotical analysis demonstrates that the transient response can be associated with the electrical stability qualitatively.</p> <br/>Acta Physica Sinica. 1998 47(5): 829-834. Published 1998-05-20 Author(s): OUYANG MIN, HOU SHI-MIN, LIN LIN, LIU WEI-MIN, XUE ZENG-QUAN, WU QUAN-DE, XIA ZONG-JU, ZOU YING-HUA <br/><p>The electrical bistability of the two kinds of complex thin films Ag-TCNQ and Ag-BDCB was discussed,which were films of metallic clusters embedded in π-conjugated organic media.And infrared spectroscopy was applied to the study of the mechanism.The pump-probe method was used to study the transient response of these two kinds of thin films, the therotical analysis demonstrates that the transient response can be associated with the electrical stability qualitatively.</p> <br/>Acta Physica Sinica. 1998 47(5): 829-834. Published 1998-05-20 STUDY OF ELECTRICAL AND OPTICAL PROPERTIES OF METALLIC CLUSTERS EMBEDDED IN ORGANIC THIN FILM (II) OUYANG MIN, HOU SHI-MIN, LIN LIN, LIU WEI-MIN, XUE ZENG-QUAN, WU QUAN-DE, XIA ZONG-JU, ZOU YING-HUA 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 829-834. article doi:10.7498/aps.47.829 10.7498/aps.47.829 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.829 829-834 //www.getgobooth.com/en/article/doi/10.7498/aps.47.835 Author(s): XU BO, CHEN LIANG-YAO, WANG YU, ZHANG RONG-JUN, ZHENG WEI-MIN, QIAN DONG-LIANG, ZHENG YU-XIANG, YANG YUE-MEI, ZHOU SHI-MING, DAI NING, DING KOU-BAO, ZHANG XIU-MIAO <br/><p>To study the influence on the optical properties of metal imposed by neighboring medium,we used Dove prisms with different refractive indexes as the substrate in experiment.The noble metal films of Au and Ag were deposited on the bottom of prisms.The dielectric functions for films at the metal-air and metal-substrate interfaces were measured by the spectroscopic ellipsometric method.We found that the dielectric functions of the film measured at the metal-substrate interface do change with the refractive index of the neighboring medium and differ from that measured at the metal-air interface in both the Drude and interband transition regions.The results obtained in a solid-contacting configuration agree with those observed by other authors in a liquid-contact condition,however they cannot be well understood by the known mechanisms.</p> <br/>Acta Physica Sinica. 1998 47(5): 835-843. Published 1998-05-20 Author(s): XU BO, CHEN LIANG-YAO, WANG YU, ZHANG RONG-JUN, ZHENG WEI-MIN, QIAN DONG-LIANG, ZHENG YU-XIANG, YANG YUE-MEI, ZHOU SHI-MING, DAI NING, DING KOU-BAO, ZHANG XIU-MIAO <br/><p>To study the influence on the optical properties of metal imposed by neighboring medium,we used Dove prisms with different refractive indexes as the substrate in experiment.The noble metal films of Au and Ag were deposited on the bottom of prisms.The dielectric functions for films at the metal-air and metal-substrate interfaces were measured by the spectroscopic ellipsometric method.We found that the dielectric functions of the film measured at the metal-substrate interface do change with the refractive index of the neighboring medium and differ from that measured at the metal-air interface in both the Drude and interband transition regions.The results obtained in a solid-contacting configuration agree with those observed by other authors in a liquid-contact condition,however they cannot be well understood by the known mechanisms.</p> <br/>Acta Physica Sinica. 1998 47(5): 835-843. Published 1998-05-20 ELLIPSOMETRIC STUDY OF THE MEDIUM-RELATED DIELECTRIC FUNCTIONS OF NOBLE METALS XU BO, CHEN LIANG-YAO, WANG YU, ZHANG RONG-JUN, ZHENG WEI-MIN, QIAN DONG-LIANG, ZHENG YU-XIANG, YANG YUE-MEI, ZHOU SHI-MING, DAI NING, DING KOU-BAO, ZHANG XIU-MIAO 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 835-843. article doi:10.7498/aps.47.835 10.7498/aps.47.835 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.835 835-843 //www.getgobooth.com/en/article/doi/10.7498/aps.47.844 Author(s): LI LI-JUN, WANG ZUO-XIN, WU JIN-LEI <br/><p>We have studied the vacancy type defects of the HgCdTe crystals by using positron annihilation time technique.Samples grown by Te solution method accommodate a large amount of Hg vacancies,no matter what kind of conducting type(n type or p type) they are.By suitable annealling process the as-grown p-type samples can be turned into n-type,and the traping of the positrons decreased(the positron annihilation time decreases by 14—17ps).If the samples are annealled at higher temperatrue,the positron annihilation time will increase.This indicates that the Hg vacancies are increased.The bulk time of the positron annihilation in HgCdTe we obtained in this experiment is 272ps.According to the positron annihilation time and the electric parameters of the samples,we obtain the appropriate annealling temperature is 180—220℃.</p> <br/>Acta Physica Sinica. 1998 47(5): 844-850. Published 1998-05-20 Author(s): LI LI-JUN, WANG ZUO-XIN, WU JIN-LEI <br/><p>We have studied the vacancy type defects of the HgCdTe crystals by using positron annihilation time technique.Samples grown by Te solution method accommodate a large amount of Hg vacancies,no matter what kind of conducting type(n type or p type) they are.By suitable annealling process the as-grown p-type samples can be turned into n-type,and the traping of the positrons decreased(the positron annihilation time decreases by 14—17ps).If the samples are annealled at higher temperatrue,the positron annihilation time will increase.This indicates that the Hg vacancies are increased.The bulk time of the positron annihilation in HgCdTe we obtained in this experiment is 272ps.According to the positron annihilation time and the electric parameters of the samples,we obtain the appropriate annealling temperature is 180—220℃.</p> <br/>Acta Physica Sinica. 1998 47(5): 844-850. Published 1998-05-20 POSITRON ANNIHILATION TIME STUDY OF DEFECTS IN Hg1-xCdxTe SINGLE CRYSTALS LI LI-JUN, WANG ZUO-XIN, WU JIN-LEI 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 844-850. article doi:10.7498/aps.47.844 10.7498/aps.47.844 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.844 844-850 //www.getgobooth.com/en/article/doi/10.7498/aps.47.851 Author(s): YANG XIANG-BO, LIU YOU-YAN <br/><p>The characteristics of the construction of one-dimensional Fibonacci-class quasilattices (1D FC(n)) have been described.By means of the electric field theory and the properties of unimodular matrix,we studied extensively the transmissive properties of light through multilayers constructed following 1D FC(n) sequence and found that the transmission coefficient for FC(2m) is switch-like(on-off-on-off-…) and there exist six circulative properties for the one of FC(2m+1) around δ=π(1/2±k), in which the number of transmission coefficient shows interesting properties.</p> <br/>Acta Physica Sinica. 1998 47(5): 851-863. Published 1998-05-20 Author(s): YANG XIANG-BO, LIU YOU-YAN <br/><p>The characteristics of the construction of one-dimensional Fibonacci-class quasilattices (1D FC(n)) have been described.By means of the electric field theory and the properties of unimodular matrix,we studied extensively the transmissive properties of light through multilayers constructed following 1D FC(n) sequence and found that the transmission coefficient for FC(2m) is switch-like(on-off-on-off-…) and there exist six circulative properties for the one of FC(2m+1) around δ=π(1/2±k), in which the number of transmission coefficient shows interesting properties.</p> <br/>Acta Physica Sinica. 1998 47(5): 851-863. Published 1998-05-20 PROPOGATION OF LIGHT THROUGH MEDIA CONSTRUCTED FOLLOWING THE SPECIAL QUASILATTICES SEQUENCE YANG XIANG-BO, LIU YOU-YAN 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 851-863. article doi:10.7498/aps.47.851 10.7498/aps.47.851 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.851 851-863 //www.getgobooth.com/en/article/doi/10.7498/aps.47.864 Author(s): LIU MING, HE YU-LIANG, JIANG XING-LIU, LI GUO-HUA, HAN HE-XIANG <br/><p>Light-emitting hydrogenated nano-crystalline silicon (nc-Si∶H) films have been fabricated using plasma-enhanced chemical-vapor deposition method.It was found that photoluminescence(PL) properties are directly related to grain size and surface strucuture.The quantum size effect and surface states model was proposed to explain PL.Meanwhile,temperature dependence of PL peak energy and integrated intensity are also studied.The former is mainly caused by band-gap shrinkage and the PL intensity decrease with increasing temperature can be interpreted using a temperature independent radiative term and a temperature-dependent thermally activated non-radiative one.</p> <br/>Acta Physica Sinica. 1998 47(5): 864-870. Published 1998-05-20 Author(s): LIU MING, HE YU-LIANG, JIANG XING-LIU, LI GUO-HUA, HAN HE-XIANG <br/><p>Light-emitting hydrogenated nano-crystalline silicon (nc-Si∶H) films have been fabricated using plasma-enhanced chemical-vapor deposition method.It was found that photoluminescence(PL) properties are directly related to grain size and surface strucuture.The quantum size effect and surface states model was proposed to explain PL.Meanwhile,temperature dependence of PL peak energy and integrated intensity are also studied.The former is mainly caused by band-gap shrinkage and the PL intensity decrease with increasing temperature can be interpreted using a temperature independent radiative term and a temperature-dependent thermally activated non-radiative one.</p> <br/>Acta Physica Sinica. 1998 47(5): 864-870. Published 1998-05-20 PHOTOLUMINESCENCE STUDY ON HYDROGENATED NANO-CRYSTALLINE SILICON FILM LIU MING, HE YU-LIANG, JIANG XING-LIU, LI GUO-HUA, HAN HE-XIANG 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 864-870. article doi:10.7498/aps.47.864 10.7498/aps.47.864 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.864 864-870 //www.getgobooth.com/en/article/doi/10.7498/aps.47.871 Author(s): MA XI-YING, YUE JIN-SHUN, HE DE-YAN, CHEN GUANG-HUA <br/><p>Cubic boron nitride (c-BN) thin films were deposited on silicon,nickel,stainless steel and Ni-coated silicon substrates by hot filament enhanced plasma chemical vapor deposition (CVD).The films were characterized by infrared spectroscopy(IR), X-ray diffraction, scanning electron microscopy(SEM),and X-ray photoelectron spectra(XPS).It was found that the quality of c-BN thin films varied with deposition conditions and substrates.Under optimum conditions,thin films with high percentage of c-BN and good adhesion were deposited on Ni substrate.When sputtering a Ni interlayer on Si substrate prior to the growth,the c-BN content of the films increased and an excellent adhesion was obtained.</p> <br/>Acta Physica Sinica. 1998 47(5): 871-875. Published 1998-05-20 Author(s): MA XI-YING, YUE JIN-SHUN, HE DE-YAN, CHEN GUANG-HUA <br/><p>Cubic boron nitride (c-BN) thin films were deposited on silicon,nickel,stainless steel and Ni-coated silicon substrates by hot filament enhanced plasma chemical vapor deposition (CVD).The films were characterized by infrared spectroscopy(IR), X-ray diffraction, scanning electron microscopy(SEM),and X-ray photoelectron spectra(XPS).It was found that the quality of c-BN thin films varied with deposition conditions and substrates.Under optimum conditions,thin films with high percentage of c-BN and good adhesion were deposited on Ni substrate.When sputtering a Ni interlayer on Si substrate prior to the growth,the c-BN content of the films increased and an excellent adhesion was obtained.</p> <br/>Acta Physica Sinica. 1998 47(5): 871-875. Published 1998-05-20 THE GROWTH CHARACTER AND ADHESION OF CUBIC BORON NITRIDE THIN FILMS MA XI-YING, YUE JIN-SHUN, HE DE-YAN, CHEN GUANG-HUA 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 871-875. article doi:10.7498/aps.47.871 10.7498/aps.47.871 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.871 871-875 //www.getgobooth.com/en/article/doi/10.7498/aps.47.876 Author(s): YAN HUI, CHEN GUANG-HUA, S.P.WONG, R.W.M.KWOK <br/><p>SiC buried layers were snythesized by a metal vapor vacuum arc ion source,with C+ ions implanted into crystalline Si substrates.According to X-ray photoelectron spectroscopy,the characteristic electron energy loss spectra of the SiC buried layers were studied.It was found that the characteristic electron energy loss spectra depend on the profiles of the carbon content,and correlate well with the order of the buried layers.</p> <br/>Acta Physica Sinica. 1998 47(5): 876-880. Published 1998-05-20 Author(s): YAN HUI, CHEN GUANG-HUA, S.P.WONG, R.W.M.KWOK <br/><p>SiC buried layers were snythesized by a metal vapor vacuum arc ion source,with C+ ions implanted into crystalline Si substrates.According to X-ray photoelectron spectroscopy,the characteristic electron energy loss spectra of the SiC buried layers were studied.It was found that the characteristic electron energy loss spectra depend on the profiles of the carbon content,and correlate well with the order of the buried layers.</p> <br/>Acta Physica Sinica. 1998 47(5): 876-880. Published 1998-05-20 CHARACTERISTIC ELECTRON ENERGY LOSS SPECTRA IN SiC BURIED LAYERS FORMED BY C+ IMPLANTATION INTO CRYSTALLINE SILICON YAN HUI, CHEN GUANG-HUA, S.P.WONG, R.W.M.KWOK 1998-05-20 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1998 47(5): 876-880. article doi:10.7498/aps.47.876 10.7498/aps.47.876 Acta Physica Sinica 47 5 1998-05-20 //www.getgobooth.com/en/article/doi/10.7498/aps.47.876 876-880

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