Large quantum rings in the ν > 1 quantum Hall regime

被引：8

作者：

Rasanen, E. ^{[1
,2
]}

Aichingen, M. ^{[2
,3
]}

机构：

[1] Free Univ Berlin, Inst Theoret Phys, D-14195 Berlin, Germany

[2] Johannes Kepler Univ Linz, Inst Theoret Phys, A-4040 Linz, Austria

[3] MathConsult GmbH, A-4040 Linz, Austria

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2009年 / 21卷 / 02期

基金：

奥地利科学基金会;

关键词：

DOTS; OSCILLATIONS; STATES;

D O I：

10.1088/0953-8984/21/2/025301

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We study computationally the ground-state properties of large quantum rings in the filling-factor nu > 1 quantum Hall regime. We show that the arrangement of electrons into different Landau levels leads to clear signatures in the total energies as a function of the magnetic field. In this context, we discuss possible approximations for the filling factor. in the system. We are able to characterize integer-nu states in quantum rings in an analogy with conventional quantum Hall droplets. We also find a partially spin-polarized state between nu = 2 and 3. Despite the specific topology of a quantum ring, this state is strikingly reminiscent of the recently found nu = 5/2 state in a quantum dot.

引用

页数：5

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Large quantum rings in the ν &gt; 1 quantum Hall regime

Large quantum rings in the ν > 1 quantum Hall regime