Conductance of Aharonov-Bohm interferometers embedded with an interacting dot: slave-boson mean-field calculation

被引：1

作者：

Takagaki, Y ^{[1
]}

Ploog, KH ^{[1
]}

机构：

[1] Paul Drude Inst Festkorperelektron, D-10117 Berlin, Germany

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2005年 / 242卷 / 15期

关键词：

D O I：

10.1002/pssb.200541025

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We numerically calculate the conductance of a one-dimensional Aharonov-Bohm loop containing a weakly coupled dot. The Coulomb repulsion is taken into account in the dot within the slave-boson mean-field approximation. We avoid the so-called phase locking by attaching an additional lead to the loop. The phase of the electron wavefunction deduced from the Aharonov-Bohm oscillation changes gradually by pi when the Fermi energy sweeps across a transmission resonance in the dot. The asymmetric lineshape of Fano-type resonances is also examined. (c) 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：3155 / 3162

页数：8

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