Kondo resonance in a quantum dot:: Finite-U Anderson model out of equilibrium

被引：6

作者：

Matsumoto, D ^{[1
]}

机构：

[1] Waseda Univ, Dept Phys, Shinjuku Ku, Tokyo 1698555, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2000年 / 69卷 / 05期

关键词：

quantum dot; finite-U Anderson model; Kondo resonance; current conservation; Keldysh formalism;

D O I：

10.1143/JPSJ.69.1449

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The transport properties through a quantum dot are studied by using the finite-Li Anderson model. The nonequilibrium Kondo resonance is investigated by the perturbation expansion in a power series of the Coulomb repulsion U in the dot at zero temperature. The current conservation is realized by the introduction of an effective distribution function in the dot. It is found that the Kondo peak in the density of states is not split by an applied voltage bias, which is in accord with the experiments to date.

引用

页码：1449 / 1456

页数：8

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