Ferromagnetic behavior of a triplet superconductor
Ferromagnetic behavior of a triplet superconductor
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三线态超导体的铁磁行为
DOI：
10.1063/1.369083
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发表时间：
1999
影响因子：
3.2
通讯作者：
Minn
中科院分区：
文献类型：
--
作者：
A. Knigavko;B. Rosenstein;Yung;H. L. Huang;Minn
用唯象的Ginzburg-Landau方法研究了具有等自旋配对的II型三重态超导体的性质。结果表明，存在两种磁通子：涡旋和磁skyrmion。序参量的矢量性质允许凝聚体的有效自旋直接耦合到磁场。这种耦合，这是让人想起塞曼相互作用的形式，显着修改的结构，一个孤立的漩涡，相比，通常的Abrikosov涡，并改变能量的涡晶格。如果耦合足够强，则三重态超导体的磁化强度在高磁场下变为正。自发涡旋态的形成也是可能的。
Properties of a type II triplet superconductor with equal spin pairing are investigated using the phenomenological Ginzburg–Landau approach. It is shown that there exist two kinds of fluxons: vortices and magnetic skyrmions. Vector nature of the order parameter allows a direct coupling of the effective spin of the condensate to a magnetic field. This coupling, which is reminiscent to Zeeman interaction in the form, significantly modifies the structure of an isolated vortex, as compared to the usual Abrikosov vortex, and changes the energetics of a vortex lattice. If the coupling is sufficiently strong, then magnetization of the triplet superconductor becomes positive at high magnetic fields. Formation of spontaneous vortex state is also possible.