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Photon-Assisted Conductance Structure for a Quantum Dot

         
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摘要

@@ 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.

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  • 来源
    《中国物理快报：英文版》 |2007年第1期|191-194|共4页
  • 作者

    LIAO Wen-Hu; GAO Qin-Xiang; ZHOU Guang-Hui;

  • 作者单位

    Department of Physics, Zunyi Normal College, Zunyi 563002;

    Department of Physics, Zunyi Normal College, Zunyi 563002;

    Department of Physics, Hunan Normal University, Changsha 410081;

    International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 物理学;
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