Vortex clusters in quantum dots

被引：58

作者：

Saarikoski, H ^{[1
]}

Harju, A ^{[1
]}

Puska, MJ ^{[1
]}

Nieminen, RM ^{[1
]}

机构：

[1] Helsinki Univ Technol, Phys Lab, FIN-02015 Espoo, Finland

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 11期

基金：

芬兰科学院;

关键词：

D O I：

10.1103/PhysRevLett.93.116802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study electronic structures of two-dimensional quantum dots in strong magnetic fields using mean-field density-functional theory and exact diagonalization. Our numerically accurate mean-field solutions show a reconstruction of the uniform-density electron droplet when the magnetic field flux quanta enter one by one the dot in stronger fields. These quanta correspond to repelling vortices forming polygonal clusters inside the dot. We find similar structures in the exact treatment of the problem by constructing a conditional operator for the analysis. We discuss important differences and limitations of the methods used.

引用

页码：116802 / 1

页数：4

共 24 条

[1] Anatomy of a bathtub vortex [J].