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Photon-assisted conductance structure for a quantum dot

Chinese Physics Letters, ISSN: 1741-3540, Vol: 24, Issue: 1, Page: 191-194
2007
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Article Description

We investigate theoretically the electron transport of a two-level quantum dot irradiated under a weak laser field at low temperatures in the rotating wave approximation. Using the method of the Keldysh equation of motion for nonequilibrium Green function, we examine the conductance for the system with photon polarization perpendicular to the tunnelling current direction. It is demonstrated that by analytic analysing and numerical examples, a feature of conductance peak splitting appears, and the dependence of conductance on the incident laser frequency and self-energy are discussed. ©2007 Chinese Physical Soceity and IOP Publishing Ltd.

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