Thermoelectric effect in a bi-layer system

被引：3
|
作者：
Lung, F. [1 ]
Marinescu, D. C. [1 ]
机构：
[1] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2011年 / 43卷 / 10期
关键词：
2-DIMENSIONAL ELECTRON-SYSTEMS; COULOMB DRAG;
D O I：
10.1016/j.physe.2011.06.003
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We show that an electric field appears in one layer of a bi-layer semiconductor system when a temperature gradient is applied in the other one. This trans-layer Seebeck effect exists on account of the inter-layer long-range electron-electron scattering and represents a generalization of the Coulomb drag phenomenon, defined as the mutual friction of two electron systems, to thermal perturbations. An effective thermopower coefficient alpha(D) is calculated within the random-phase approximation for the Coulomb interaction. At low temperature, alpha(D) is found to be directly proportional to the electron-electron scattering rate in 2D, tau(-1)(ee). (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1769 / 1773
页数：5
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