ABSENCE OF LOCALIZATION IN A NONLINEAR RANDOM BINARY ALLOY

被引：65

作者：

MOLINA, MI

TSIRONIS, GP

机构：

[1] UNIV CRETE,DEPT PHYS,GR-71110 IRAKLION,GREECE

[2] UNIV CRETE,RES CTR CRETE,GR-71110 IRAKLION,GREECE

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.73.464

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate electronic propagation in a one-dimensional nonlinear random binary alloy modeled by a discrete nonlinear Schrodinger equation. We find absence of electronic localization except for large nonlinearity parameter values. The presence of disorder is completely overcome by the nonlinear terms leading to ballistic propagation of the untrapped electronic fraction. The existence of disorder in the model is manifested in the power-law decay of the transmissivity of plane waves through the medium as a function of the system size.

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页码：464 / 467

页数：4

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