Superconducting materials with noncentrosymmetric lattices lacking space inversion symmetry exhibit a variety of interesting parity-breaking phenomena, including the magnetoelectric effect, spin-polarized currents, helical states, and the unusual Josephson effect. We demonstrate, within a Ginzburg-Landau framework describing noncentrosymmetric superconductors with $O$ point group symmetry, that vortices can exhibit an inversion of the magnetic field at a certain distance from the vortex core. In stark contrast to conventional superconducting vortices, the magnetic-field reversal in the parity-broken superconductor leads to nonmonotonic intervortex forces, and, as a consequence, to the exotic properties of the vortex matter such as the formation of vortex bound states, vortex clusters, and the appearance of metastable vortex/antivortex bound states.

中文翻译：

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非中心对称超导体中具有磁场反转的涡旋

具有非中心对称晶格且缺乏空间反转对称性的超导材料表现出各种有趣的奇偶破坏现象，包括磁电效应，自旋极化电流，螺旋态和不寻常的约瑟夫森效应。我们在Ginzburg-Landau框架内演示了非中心对称超导体$Ø$点群对称性，即涡旋在距涡旋核一定距离处可表现出磁场反转。与常规的超导涡旋形成鲜明对比的是，奇偶打破的超导体中的磁场反转会导致非单调的涡旋力，并因此导致涡旋物质的奇异特性，例如形成涡旋束缚态，涡旋簇，以及亚稳态涡旋/反涡旋束缚态的出现。