Progress of hidden spin polarization in inversion-symmetric crystals

作     者：Shan Guan Jia-Xin Xiong Zhi Wang Jun-Wei Luo Shan Guan;Jia-Xin Xiong;Zhi Wang;Jun-Wei Luo

作者机构：State Key Laboratory of Superlattices and MicrostructuresInstitute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China Beijing Academy of Quantum Information SciencesBeijing 100193China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2022年第65卷第3期

页      面：1-18页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：supported by the National Science Fund for Distinguished Young Scholars(Grant No.11925407) the National Natural Science Foundation of China(Grant No.11904359) the Basic Science Center Program of the National Natural Science Foundation of China(Grant No.61888102) the Key Research Program of Frontier Sciences,CAS(Grant No.ZDBSLY-JSC019) the National Key Research and Development Program of China(Grant No.2018YFB2202800) 

主　　题：spin-orbit coupling hidden spin polarization tight-binding model ab initio calculation 

摘      要：Hidden spin polarization refers to that doubly degenerate bands protected by combined inversion and time-reversal symmetry in nonmagnetic inversion-symmetric crystals could have opposite non-zero local spin polarizations, which are spatially separated in two real-space sectors paired by the inversion symmetry. Since its first prediction from ab initio calculation, hidden spin polarization has inspired tremendous interest and has been observed experimentally due to its intriguing fundamental properties as well as the great potential for applications. Moving forward, the search for moment-dependent spin splitting has also been extended to antiferromagnets even without considering spin-orbit coupling. This paper systematically reviews recent works in this field with a focus on basic concepts and material realization. It also details several remaining bottlenecks and suggests possible avenues for future research.