In-plane magnetic field-induced skyrmion crystal in frustrated magnets with easy-plane anisotropy

作     者：Satoru Hayami 

作者机构：Department of Applied Physics The University of Tokyo Tokyo 113-8656 Japan 

出 版 物：《Physical Review B》 (Phys. Rev. B)

年 卷 期：2021年第103卷第22期

页      面：224418-224418页

核心收录：

基　　金：Japan Society for the Promotion of Science, KAKEN, (19H01834, JP21H01037, JP19K03752) Japan Science and Technology Agency, JST, (JPMJPR20L8) 

主　　题：Frustrated magnetism Skyrmions Antiferromagnets Noncollinear magnets Heisenberg model Metropolis algorithm Monte Carlo methods Simulated annealing 

摘      要：We theoretically investigate the instability toward a skyrmion crystal (SkX) in frustrated triangular magnets. By performing simulated annealing and Monte Carlo simulations, we show that a frustrated spin model with easy-plane single-ion anisotropy exhibits a SkX in an in-plane external magnetic field. The emergent SkX is a counterpart of that induced by easy-axis anisotropy in an out-of-plane magnetic field, both of which show the topological Hall effect. We also find that a variety of multiple-Q states distinct from the SkX are stabilized in the presence of easy-plane anisotropy. Our results provide a possibility to realize a SkX in easy-plane frustrated magnets by applying an in-plane magnetic field to in-plane cycloidal spiral magnets.