تقرير
Local breaking of the spin degeneracy in the vortex states of Ising superconductors: Induced antiphase ferromagnetic order
| العنوان: | Local breaking of the spin degeneracy in the vortex states of Ising superconductors: Induced antiphase ferromagnetic order |
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| المؤلفون: | Jiang, Hong-Min, Pan, Xiao-Yin |
| المصدر: | Phys. Rev. B 105, 014510 (2022) |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity |
| الوصف: | Ising spin-orbital coupling is usually easy to identify in the Ising superconductors via an in-plane critical field enhancement, but we show that the Ising spin-orbital coupling also manifests in the vortex physics for perpendicular magnetic fields. By self-consistently solving the Bogoliubov-de Gennes equations of a model Hamiltonian built on the honeycomb lattice with the Ising spin-orbital coupling pertinent to the transition metal dichalcogenides, we numerically investigate the local breaking of the spin and sublattice degeneracies in the presence of a perpendicular magnetic field. It is revealed that the ferromagnetic orders are induced inside the vortex core region by the Ising spin-orbital coupling. The induced magnetic orders are antiphase in terms of their opposite polarizations inside the two nearest-neighbor vortices with one of the two polarizations coming dominantly from one sublattice sites, implying the local breaking of the spin and sublattice degeneracies. The finite-energy peaks of the local-density-of-states for spin-up and spin-down in-gap states are split and shifted oppositely by the Ising spin-orbital coupling, and the relative shifts of them on sublattices $A$ and $B$ are also of opposite algebraic sign. The calculated results and the proposed scenario may not only serve as experimental signatures for identifying the Ising spin-orbital coupling in the Ising superconductors, but also be prospective in manipulation of electron spins in motion through the orbital effect in the superconducting vortex states. Comment: 9 pages, 5figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.105.014510 |
| URL الوصول: | http://arxiv.org/abs/2202.04797 |
| رقم الأكسشن: | edsarx.2202.04797 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.105.014510 |
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