Electron transport in coupled chains of interacting fermions with impurities

被引：5

作者：

Arrigoni, E

Brendel, B

Hanke, W

机构：

[1] Institut für Theoretische Physik, Universität Würzburg, Würzburg

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.79.2297

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study low-temperature transport properties of a doped two-chain ladder system of interacting fermions in the presence of a barrier or of a low concentration of impurities. The conductance is suppressed above a certain value of the interaction as in a single chain, despite the presence of dominant superconducting correlations. There is, however, a region of repulsive interaction where perfect transmission across the barrier occurs unlike that in the single-chain case. We provide a possible explanation for the temperature maximum of the resistivity in the normal state of Sr0.4Ca13.6Cu24O42-delta.

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页码：2297 / 2300

页数：4

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