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.
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