二维范德华磁体的拓扑自旋结构的研究进展  

Progress and perspective on the topological spin textures in two-dimensional van der Waals magnets

作　　者：许洪军 刘艺舟 Giovanni Finocchio Kang LWang 于国强 Hongjun Xu;Yizhou Liu;Giovanni Finocchio;Kang L.Wang;Guoqiang Yu(Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,University of Chinese Academy of Sciences,Chinese Academy of Sciences,Beijing 100190,China;RIKEN Center for Emergent Matter Science(CEMS),Wako 351-0198,Japan;Department of Mathematical and Computer Sciences,Physical Sciences and Earth Sciences,University of Messina,Messina 98166,Italy;Department of Electrical Engineering,University of California,Los Angeles CA 90095,USA)

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,University of Chinese Academy of Sciences,Chinese Academy of Sciences,Beijing 100190,China [2]RIKEN Center for Emergent Matter Science(CEMS),Wako 351-0198,Japan [3]Department of Mathematical and Computer Sciences,Physical Sciences and Earth Sciences,University of Messina,Messina 98166,Italy [4]Department of Electrical Engineering,University of California,Los Angeles CA 90095,USA

出　　处：《Science Bulletin》2024年第11期1612-1616,共5页科学通报（英文版）

基　　金：supported by the financial support from the National Key Research and Development Program of China (2022YFA1403602);the National Natural Science Foundation of China ( 52161160334,and 12274437);the Science Center of the National Natural Science Foundation of China (52088101);the CAS Project for Young Scientists in Basic Research (YSBR084);supported by the project PRIN 2020LWPKH7 funded by the Italian Ministry of Research and under the Project No. 101070287—SWAN-on-chip—HORIZON-CL4-2021-DIGITALEMERGING-01 funded by the European Union;part supported by KACST;NSF;supported by the RIKEN Special Postdoctoral Researcher (SPDR) program。

摘　　要：The importance of topological spin textures(TSTs), such as skyrmions, merons, hopfions, etc., is due to their static and dynamic properties [1]. They carry a topological number that characterizes the homotopy group Π_(n)(S^(2))(n ∈ Z) and classifies maps from S^(n) to S^(2)(e.g., the skyrmion winding number corresponds to Π_(2)(S^(2))).

关 键 词：自旋结构 TOPOLOGICAL HOMOTOPY 

分 类 号：O469[理学—凝聚态物理]