Spontaneous coherence and collective modes in double-layer quantum-dot systems

被引：28

作者：

Hu, J ^{[1
]}

Dagotto, E ^{[1
]}

MacDonald, AH ^{[1
]}

机构：

[1] INDIANA UNIV, DEPT PHYS, BLOOMINGTON, IN 47405 USA

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 12期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.54.8616

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the ground state and collective excitations of parabolically confined double-layer quantum-dot systems in a strong magnetic field. We identify parameter regimes where electrons form maximum density droplet states, quantum-dot analogs of the incompressible states of the bulk integer quantum Hall effect. In these regimes the Hartree-Fock approximation and the time-dependent Hartree-Fock approximations can be used to describe the ground state and collective excitations, respectively. We comment on the relationship between edge excitations of dots and edge magnetoplasmon excitations of bulk double-layer systems.

引用

页码：8616 / 8622

页数：7

共 56 条

[1] DIMENSIONAL RESONANCE OF THE TWO-DIMENSIONAL ELECTRON-GAS IN SELECTIVELY DOPED GAAS/ALGAAS HETEROSTRUCTURES [J].