Absence of localization in one-dimensional lattice with off-diagonal nonlinearity disorder

被引：0
|
作者：
Pan, ZW [1 ]
Xiong, SJ
Gong, CD
机构：
[1] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
[3] CCAST, World Lab, Beijing 100080, Peoples R China
[4] Ctr Adv Studies Sci & Technol Microstruct, Nanjing 210093, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 1999年 / 31卷 / 04期
关键词：
localization; nonlinearity; disorder;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The time evolution of an initially localized mode in a one-dimensional lattice with off-diagonal nonlinearity disorder is studied by solving a modified nonlinear Schrodinger equation. Absence of localization is found when the nonlinearity parameter is beyond the self-trapping region for corresponding periodic lattice. The propagation of electrons shows ballistic behavior even in the presence of disorder. When self-trapping occurs, the untrapped portion still escapes ballistically.
引用
收藏
页码：513 / 516
页数：4
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