Nonlinear transport in a one-dimensional Mott insulator in strong electric fields

被引：4

作者：

Oka, T ^{[1
]}

Arita, R ^{[1
]}

Aoki, H ^{[1
]}

机构：

[1] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

来源：

PHYSICA B-CONDENSED MATTER | 2005年 / 359卷

关键词：

Mott insulator; I-V characteristics; non-equilibrium phenomenon;

D O I：

10.1016/j.physb.2005.01.218

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The time-dependent Schrodinger's equation is integrated for a one-dimensional strongly correlated electron system driven by large electric fields. For larger electric fields, many-body Landau-Zener tunneling takes place at anti-crossings of the many-body energy levels. The nonlinear I-V characteristics as well as the time dependence of the energy expectation value is obtained. The energy of the Mott insulator in electric fields shows a saturation, which suggests a dynamical localization in energy space of the many-body wave functions. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：759 / 761

页数：3

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