Quantum Hall skyrmions with higher topological charge

被引:24
|
作者
Lilliehook, D [1 ]
Lejnell, K [1 ]
Karlhede, A [1 ]
Sondhi, SL [1 ]
机构
[1] PRINCETON UNIV,DEPT PHYS,PRINCETON,NJ 08544
来源
PHYSICAL REVIEW B | 1997年 / 56卷 / 11期
关键词
D O I
10.1103/PhysRevB.56.6805
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have investigated quantum Hall Skyrmions at filling factor v=1 carrying more than one unit of topological, and hence electric, charge. Using a combination of analytic and numerical methods we find the counterintuitive result that when the Zeeman energy is tuned to values much smaller than the interaction energy [g mu(B)/(e(2)/epsilon l)<8.4x10(-5)], the creation energy of a charge two Skyrmion becomes less than twice the creation energy of a charge one Skyrmion, i.e., Skyrmions bind in pairs. The doubly charged Skyrmions are stable to further accretion of charge and exhibit a 10% larger spin per unit charge than charge one Skyrmions which would, in principle, signal this pairing.
引用
收藏
页码:6805 / 6809
页数:5
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