Topological structure of a vortex in the Fulde-Ferrell-Larkin-Ovchinnikov state
Topological structure of a vortex in the Fulde-Ferrell-Larkin-Ovchinnikov state
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DOI：
10.1103/physrevlett.95.117003
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发表时间：
2005-09-09
影响因子：
8.6
通讯作者：
Ichioka, M
中科院分区：
文献类型：
--
作者：
Mizushima, T;Machida, K;Ichioka, M
我们从理论上发现，由于一个简单的拓扑原因，在Fulde-Ferrell-Larkin-Ovchinnikov（FFLO）态中的涡旋核与普通的涡旋核有很大的不同。涡旋和FFLO状态的节面的交点清空了多余的自旋。这导致自发磁化的空间结构中的可观察的后果。通过求解微观Bogoliubov-de Gennes方程，我们分析了这种基于低激发谱的拓扑结构，以阐明其物理起源。
We find theoretically that the vortex core in the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state is quite different from the ordinary core for a simple topological reason. The intersection point of a vortex and nodal plane of the FFLO state empties the excess spins. This leads to observable consequences in the spatial structure of the spontaneous magnetization. We analyze this topological structure based on the low lying excitation spectrum by solving a microscopic Bogoliubov-de Gennes equation to clarify its physical origin.