Skyrmion and Bimeron Excitations in Imbalanced Bilayer Quantum Hall Systems
Skyrmion and Bimeron Excitations in Imbalanced Bilayer Quantum Hall Systems
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DOI：
10.1063/1.3666523
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发表时间：
2011-12
期刊：
影响因子：
--
通讯作者：
Z. F. Ezawa;G. Tsitsishvili
中科院分区：
文献类型：
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作者：
Z. F. Ezawa;G. Tsitsishvili
基于微观理论分析了非平衡双层量子霍尔系统中Skyrmion的激发。一个skymion携带自旋和赝自旋自由度。在平行磁场的存在下，由于自旋分量，激活能增加，而由于赝自旋分量，通过将Skyrmion变形为双重子（一对重子），激活能降低。提出了非平衡体系活化能的近似公式。
Skyrmion excitations are analyzed in imbalanced bilayer quantum Hall systems based on a microscopic theory. A skymion carries both the spin and pseudospin degrees of freedom. In the presence of the parallel magnetic field, the activation energy increases due to the spin component, while it decreases due to the pseudospoin component by deforming a skyrmion into a bimeron (a pair of merons). We propose an approximate formula for the activation energy in imbalanced systems.