Vertical quantum dots with elliptically deformed cross sections

被引：3

作者：

Austing, DG

Sasaki, S

Tarucha, S

Reimann, SM

Koskinen, M

Manninen, M

机构：

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

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

[3] Univ Jyvaskyla, Dept Phys, SF-40351 Jyvaskyla, Finland

来源：

PHYSICA B | 1999年 / 272卷 / 1-4期

基金：

芬兰科学院;

关键词：

quantum dots; artificial atom; spin-density functional theory; shell structure;

D O I：

10.1016/S0921-4526(99)00347-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Few-electron vertical quantum dot artificial atoms with circular and elliptically deformed cross sections are investigated. Because of the high symmetry of the lateral confining potential, circular dots show a pronounced shell structure. With the lifting of level degeneracies, even a small deformation in shape is found to radically alter the shell structure leading to significant modifications of the addition energy spectra, and to induce change in the total spin. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：68 / 71

页数：4

共 9 条

[1]

AUSTING DG, 1999, IN PRESS PHYS REV B

[2] Electronic properties in quantum dots with asymmetric confining potential [J].