Spontaneous symmetry breaking in single and molecular quantum dots

被引：233

作者：

Yannouleas, C ^{[1
]}

Landman, U ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.82.5325

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Classes of spontaneous symmetry breaking at zero and low magnetic fields in single quantum dots (QD's) and quantum dot molecules (QDM's) are discussed in relation to the ratio R-W between the interelectron Coulomb repulsion and the harmonic confinement, using spin-and-space unrestricted Hartree-Fock calculations. These include Wigner crystallization for R-W > 1, and formation of noncrystallized electron puddles localized on the individual dots in QDM's, as well as spin-density waves in single QD's, for R-W < 1.

引用

页码：5325 / 5328

页数：4