Observation of skyrmions in a two-dimensional hole system

被引：7
|
作者：
Townsley, CM
Chughtai, R
Nicholas, RJ
Henini, M
机构：
[1] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England
[2] Univ Nottingham, Dept Phys & Astron, Nottingham NG7 2RD, England
来源：
PHYSICAL REVIEW B | 2005年 / 71卷 / 07期
关键词：
D O I：
10.1103/PhysRevB.71.073303
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present magnetoreflectivity results indicating the observation of skyrmions in a two-dimensional hole system. The structure is chosen so that the complex valence-band structure causes a crossing of the lowest two spin-split Landau levels at fields near nu = 1. This reduces the Zeeman energy with respect to the Coulomb energy sufficiently to allow the formation of skyrmions. The formation of antiskyrmions at higher fields is rapidly suppressed due to the rapid divergence of the Landau levels at these magnetic fields.
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页数：4
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