Effect of uncertainty principle on the Wigner function-based simulation of quantum transport

被引：12
|
作者：
Kim, Kyoung-Youm [1 ]
Kim, Saehwa [2 ]
机构：
[1] Sejong Univ, Dept Elect Engn, Seoul 143747, South Korea
[2] Hankuk Univ Foreign Studies, Dept Informat & Commun Engn, Gyeonggi Do 449791, South Korea
来源：
SOLID-STATE ELECTRONICS | 2015年 / 111卷
关键词：
Wigner function; Uncertainty principle; Quantum transport; Numerical analysis; VARYING EFFECTIVE-MASS; EQUATION; SEMICONDUCTORS; FORMULATION; SCHEMES; DEVICES;
D O I：
10.1016/j.sse.2015.04.007
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We investigate the effect of uncertainty principle on the simulation of quantum transport based on the Wigner function. We show that due to the positional uncertainty of electrons within the device, which bounds the region for nonlocal potential correlation, a constraint is imposed via the uncertainty principle on the possible momentum resolution of the Wigner function. It is numerically demonstrated that its violation deteriorates the simulation results significantly in configurations where the quantum effects are crucial. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：22 / 26
页数：5
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