Helicity-Controlled Spin Hall Angle in 2D Altermagnets with Rashba Spin-Orbit Coupling

作     者：Weiwei Chen Longhai Zeng W.Zhu Weiwei Chen;Longhai Zeng;W.Zhu

作者机构：Key Laboratory of Intelligent Manufacturing Quality Big Data Tracing and Analysis of Zhejiang ProvinceCollege of SciencesChina Jiliang UniversityHangzhou 310018China Key Laboratory of Intelligent Manufacturing Quality Big Data Tracing and Analysis of Zhejiang ProvinceCollege of ScienceChina Jiliang UniversityHangzhou 310018China School of ScienceWestlake UniversityHangzhou 310024China 

出 版 物：《Chinese Physics Letters》 (中国物理快报(英文版))

年 卷 期：2025年第42卷第1期

页      面：134-140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 Key R&D Program(Grant No.2022YFA1402204) the National Natural Science Foundation of China(Grant No.52471020) 

主　　题：interaction magnets Rashba 

摘      要：We investigated the efficiency of charge-to-spin conversion in two-dimensional Rashba altermagnets,a class of materials that combines the characteristics of both ferromagnets and *** quantum linear response theory,we quantified the longitudinal and spin Hall conductivities in this system and demonstrated a substantial enhancement in the spin Hall angle below the band crossing point through the dual effects of relativistic spin–orbit interaction and nonrelativistic altermagnetic exchange ***,the results showed that the skew scattering and intrinsic mechanisms arising from Fermi sea states are almost negligible in this system,in contrast to conventional ferromagnetic Rashba *** findings not only elucidate the spin dynamics in Rashba altermagnets but also pave the way for developing novel strategies for manipulating charge-to-spin conversion via sophisticated control of noncollinear and collinear out-of-plane spin textures.