標題: Effects of incoherent processes on the quantum transport through a finite-range time-modulated potential
作者: Liang, HC
Chu, CS
電子物理學系
Department of Electrophysics
公開日期: 1-二月-2001
摘要: We study the effect of phase randomization on the quantum transport through a finite-range time-modulated potential. The time-modulated potential leads only to coherent inelastic scatterings, and the incoherent processes are described by an S-matrix model proposed originally by Buttiker for the case of time-independent transport. This S-matrix model provides us a systematic way to reinject into the system those electrons that have suffered with incoherent scatterings. The distribution of these reinjected electrons is determined by an effective chemical potential <(<mu>)over tilde>. For comparison, we study the cases where the incoherent processes occur inside and outside the time-modulated region. The incoherent processes are found to broaden and to smear the structures in the conductance G that are associated with the coherent inelastic scatterings. However, the smearing is more effective when the incoherent processes occur inside the time-modulated potential region.
URI: http://hdl.handle.net/11536/29869
ISSN: 0577-9073
期刊: CHINESE JOURNAL OF PHYSICS
Volume: 39
Issue: 1
起始頁: 64
結束頁: 74
顯示於類別:期刊論文


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