ABSENCE OF LOCALIZATION AND LARGE DC CONDUCTANCE IN RANDOM SUPERLATTICES WITH CORRELATED DISORDER

被引：53

作者：

DIEZ, E ^{[1
]}

SANCHEZ, A ^{[1
]}

DOMINGUEZADAME, F ^{[1
]}

机构：

[1] UNIV COMPLUTENSE MADRID,FAC FIS,DEPT FIS MAT,E-28040 MADRID,SPAIN

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.50.14359

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study how the influence of structural correlations in disordered systems manifests itself in experimentally measurable magnitudes, focusing on dc conductance of semiconductor superlattices with general potential profiles. We show that the existence of bands of extended states in these structures gives rise to very noticeable peaks in the finite-temperature dc conductance as the chemical potential is moved through the bands or as the temperature is increased from zero. On the basis of these results we discuss how dc conductance measurements can provide information on the location and width of the bands of extended states. Our predictions can be used to demonstrate experimentally that structural correlations inhibit the localization effects of disorder. © 1994 The American Physical Society.

引用

页码：14359 / 14367

页数：9

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