LOCAL CORRELATIONS IN ONE-DIMENSIONAL AND 2-DIMENSIONAL DISORDERED-SYSTEMS

被引：38

作者：

HILKE, M

机构：

[1] Dept. de Phys. Theorique, Geneve Univ.

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1994年 / 27卷 / 14期

关键词：

D O I：

10.1088/0305-4470/27/14/008

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In one-dimensional disordered systems all states are localized but when you add local correlations, such as a dimer impurity, some states become delocalized. In this paper, a wide range of correlations are studied leading to a delocalization of states. Moreover, second-nearest-neighbour models which also have extended states are investigated. Finally, a new approach to the case of two dimensions is presented, using a matrix-transfer technique, where explicit extended states are found.

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页码：4773 / 4782

页数：10

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