Logarithmic temperature dependence of conductivity at half filled landau level

被引：26

作者：

Khveshchenko, DV

机构：

[1] NORDITA, Copenhagen, DK-2100

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.77.362

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the temperature dependence of the longitudinal conductivity at half filled Landau level by means of the theory of composite fermions in the weakly disordered regime (k(F)l >> 1). At low temperatures we find the leading In T correction resulting from the interference between impurity scattering and gauge interactions of the composite fermions. The prefactor appears to be strongly enhanced as compared to the standard Altshuler-Aronov term in agreement with recent experimental observations.

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收藏

页码：362 / 365

页数：4

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