Wave packet dynamics under effect of a pulsed electric field

被引：2

作者：

da Silva, A. R. C. B. ^{[1
]}

de Moura, F. A. B. F. ^{[1
]}

Dias, W. S. ^{[1
]}

机构：

[1] Univ Fed Alagoas, Inst Fis, BR-57072970 Maceio, AL, Brazil

来源：

SOLID STATE COMMUNICATIONS | 2016年 / 236卷

关键词：

Electric field; Electronic dynamics; Localized states; Gaussian-pulse; BLOCH OSCILLATIONS; LOCALIZATION; PARTICLE; LATTICES;

D O I：

10.1016/j.ssc.2016.03.009

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We studied the dynamics of an electron in a crystalline one-dimensional model under effect of a time dependent Gaussian field. The time evolution of an initially Gaussian wave packet it was obtained through the numerical solution of the time-dependent Schrodinger equation. Our analysis consists of computing the electronic centroid as well as the mean square displacement. We observe that the electrical pulse is able to promote a special kind of displacement along the chain. We demonstrated a direct relation between the group velocity of the wave packet and the applied electrical pulses. We compare those numerical calculations with a semi-classical approach. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：12 / 16

页数：5

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