Nonuniversal transmission phase lapses through a quantum dot: An exact diagonalization of the many-body transport problem

被引：23

作者：

Baksmaty, Leslie O. ^{[1
]}

Yannouleas, Constantine ^{[1
]}

Landman, Uzi ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.101.136803

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Systematic trends of nonuniversal behavior of electron-transmission phases through a quantum dot, with no phase lapse for the transition N = 1 -> N = 2 and a lapse of pi for the N = 2 -> N = 3 transition, are predicted, in agreement with experiments, from many-body transport calculations involving exact diagonalization of the dot Hamiltonian. The results favor shape anisotropy of the dot and strong e - e repulsion with consequent electron localization, showing dependence on spin configurations and the participation of excited doorway transmission channels.

引用

页数：4

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