南方科技大学知识苑(SUSTech KC): Role of Hidden Spin Polarization in Nonreciprocal Transport of Antiferromagnets

题名	Role of Hidden Spin Polarization in Nonreciprocal Transport of Antiferromagnets
作者	Chen, Weizhao1,2 ; Gu, Mingqiang1,2 ; Li, Jiayu1,2 ; Wang, Panshuo1,2 ; Liu, Qihang1,2,3,4
通讯作者	Liu, Qihang
发表日期	2022-12-28
DOI	10.1103/PhysRevLett.129.276601
发表期刊	PHYSICAL REVIEW LETTERS 影响因子和分区
ISSN	0031-9007
EISSN	1079-7114
卷号	129 期号:27
摘要	The discovery of hidden spin polarization (HSP) in centrosymmetric nonmagnetic crystals, i.e., spatially distributed spin polarization originated from local symmetry breaking, has promised an expanded material pool for future spintronics. However, the measurements of such exotic effects have been limited to subtle space-and momentum-resolved techniques, unfortunately, hindering their applications. Here, we theoretically predict macroscopic non-reciprocal transports induced by HSP when coupling another spatially distributed quantity, such as staggered local moments in a space-time PT-symmetric anti-ferromagnet. By using a four-band model Hamiltonian, we demonstrate that HSP plays a crucial role in determining the asymmetric bands with respect to opposite momenta. Such band asymmetry leads to non-reciprocal nonlinear conductivity, exemplified by tetragonal CuMnAs via first-principles calculations. We further provide the material design principles for large nonlinear conductivity, including two-dimensional nature, multiple band crossings near the Fermi level, and symmetry protected HSP. Our Letter not only reveals direct spintronic applications of HSP (such as Ncel order detection), but also sheds light on finding observables of other hidden effects, such as hidden optical polarization and hidden Berry curvature.
相关链接	[来源记录]
收录类别	SCI
语种	英语
重要成果	NI论文
学校署名	第一 ; 通讯
资助项目	National Key R&D Program of China[2020YFA0308900] ; National Natural Science Foundation of China["11874195","12274194"] ; Guangdong Provincial Key Laboratory for Computational Science and Material Design[2019B030301001] ; Science, Technology and Innovation Commission of Shenzhen Municipality[ZDSYS2019 0902092905285]
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000916673300001
出版者	AMER PHYSICAL SOC
ESI学科分类	PHYSICS
来源库	Web of Science
引用统计	被引频次[WOS]：15
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/430740
专题	量子科学与工程研究院理学院_物理系
作者单位	1.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China 2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China 3.Southern Univ Sci & Technol, Guangdong Prov Key Lab Computat Sci & Mat Design, Shenzhen 518055, Peoples R China 4.Southern Univ Sci & Technol, Shenzhen Key Lab Adv Quantum Funct Mat & Devices, Shenzhen 518055, Peoples R China
第一作者单位	量子科学与工程研究院; 物理系
通讯作者单位	量子科学与工程研究院; 物理系; 南方科技大学
第一作者的第一单位	量子科学与工程研究院
推荐引用方式 GB/T 7714	Chen, Weizhao,Gu, Mingqiang,Li, Jiayu,et al. Role of Hidden Spin Polarization in Nonreciprocal Transport of Antiferromagnets[J]. PHYSICAL REVIEW LETTERS,2022,129(27).
APA	Chen, Weizhao,Gu, Mingqiang,Li, Jiayu,Wang, Panshuo,&Liu, Qihang.(2022).Role of Hidden Spin Polarization in Nonreciprocal Transport of Antiferromagnets.PHYSICAL REVIEW LETTERS,129(27).
MLA	Chen, Weizhao,et al."Role of Hidden Spin Polarization in Nonreciprocal Transport of Antiferromagnets".PHYSICAL REVIEW LETTERS 129.27(2022).