Bloch oscillations and nonlinear transport in a one-dimensional semiconductor superlattice

被引：5
|
作者：
Lyo, S. K. [1 ]
机构：
[1] Sandia Natl Labs, Albuquerque, NM 87185 USA
来源：
PHYSICAL REVIEW B | 2008年 / 77卷 / 19期
关键词：
D O I：
10.1103/PhysRevB.77.195306
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present an exact analytic result for the time-dependent and steady-state current and the distribution function in a nonlinear electric field for an electron gas in a one-dimensional superlattice miniband by employing a relaxation-time approximation for inelastic scattering. Our transparent results clearly show the condition for the onset of the Bloch oscillations, the field for the peak steady-state current, and the distinct roles played by elastic and inelastic scattering for the damped oscillations and the steady-state current. The results are consistent with a recent full microscopic numerical calculation.
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页数：8
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