A Theoretical Approach to Tunneling Processes in Quantum Structures.

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  • Isawa Yoshimasa
    Department of Physical Electronics, Faculty of Engineering, Hiroshima University, Kagamiyama 1–4–1, Higashihiroshima 739–8527 Department of Quantum Matter, Graduate School of Advanced Science of Matter, Hiroshima University, Kagamiyama 1–3–1, Higashihiroshima 739–8526
  • Horii Hideto
    Department of Physical Electronics, Faculty of Engineering, Hiroshima University, Kagamiyama 1–4–1, Higashihiroshima 739–8527

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  • Theoretical Approach to Tunneling Processes in Quantum Structures

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A theoretical framework for the electrical transport through quantum structures (QS) is proposed based on Keldysh Green's function. It is our purpose to develop a new analytic method which is applicable in the situation where the higher order effects of the elastic and the inelastic scattering processes are essential. We derive a general formula for the current through QS and find new components of co-tunneling current proportional to V2 and V in addition to V3 term at T=0 K resulting from electron correlation between different charge states.

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