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Abstract
The dynamical properties of a one-dimensional quantum ring with a constant magnetic flux are studied using the non-equilibrium Green’s function method. The ring is coupled through a single lead to an electron reservoir, which is driven by a stepped pulse bias. We provide a numerical method to calculate current in the presence of stepped bias. Our results reveal the relation between the evolution of tunneling current and electron energy levels of the ring.

Keywords:
quantum ring/

tunneling current/

energy level
Authors and contacts
Guo Yan-Jiang,

Xiong Yong-Jian

1.
References

Cited By

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Vol. 59, Issue 1 - 2010-01-05

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