Spin states in circular and elliptical quantum dots

被引：37

作者：

Sasaki, S

Austing, DG

Tarucha, S

机构：

[1] NTT, Basic Res Labs, Kanagawa 2430198, Japan

[2] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

来源：

PHYSICA B-CONDENSED MATTER | 1998年 / 256卷

关键词：

quantum dot; spin; Hund's rule; Zeeman effect;

D O I：

10.1016/S0921-4526(98)00486-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The effects of asymmetry on the spin states are studied in elliptical quantum dots. Circular dots possess rotational symmetry. They clearly show atom-like electronic properties such as a shell structure, and Hund's rule which favors parallel spins. Hund's rule is easily broken in elliptical dots because the asymmetric lateral confining potential lifts the degeneracy of the single particle states. The resultant change of the spin states in the elliptical dots is directly confirmed by Zeeman effect measurements. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：157 / 160

页数：4

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