Junction of three quantum wires:: Restoring time-reversal symmetry by interaction -: art. no. 136405

被引：61

作者：

Barnabé-Thériault, X ^{[1
]}

Sedeki, A ^{[1
]}

Meden, V ^{[1
]}

Schönhammer, K ^{[1
]}

机构：

[1] Univ Gottingen, Inst Theoret Phys, D-37077 Gottingen, Germany

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.94.136405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the transport of correlated fermions through a junction of three one-dimensional quantum wires pierced by a magnetic flux. We determine the flow of the conductance as a function of a low-energy cutoff in the entire parameter space. For attractive interactions and generic flux the fixed point with maximal asymmetry of the conductance is the stable one, as conjectured recently. For repulsive interactions and arbitrary flux we find a line of stable fixed points with vanishing conductance as well as stable fixed points with symmetric conductance (4/9)(e(2)/h).

引用

页数：4

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