Miniband transport in a two-dimensional electron gas with a strong periodic unidirectional potential modulation

被引：0
|
作者：
Lyo, S. K. [1 ]
Pan, W. [2 ]
机构：
[1] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
[2] Sandia Natl Labs, Albuquerque, NM 87185 USA
来源：
SOLID STATE COMMUNICATIONS | 2014年 / 196卷
基金：
美国能源部;
关键词：
Semiconductors; Two-dimensional systems; High-field transport; SEMICONDUCTOR SUPERLATTICES; CARRIERS;
D O I：
10.1016/j.ssc.2014.07.023
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We study the Bloch oscillations of a two-dimensional electron gas with a strong periodic potential-modulation and miniband transport along the field at low temperatures, assuming a free motion in the transverse direction. The dependence of the current on the field, the electron density, and the temperature is investigated by using a relaxation-time approximation for inelastic scattering. For a fixed total scattering rate, the field dependence of the current is sensitive to the ratio of the elastic and inelastic scattering rates in contrast with the recent result of a multiband but otherwise similar model with a weak potential modulation. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：51 / 54
页数：4
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