Phonon dichroism in proximitized graphene  

作　　者：单文语 Wen-Yu Shan(Department of Physics,School of Physics and Materials Science,Guangzhou University,Guangzhou 510006,China)

机构地区：[1]Department of Physics,School of Physics and Materials Science,Guangzhou University,Guangzhou 510006,China

出　　处：《Chinese Physics B》2023年第10期112-117,共6页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.11904062);the Starting Research Fund from Guangzhou University(Grant No.RQ2020076);Guangzhou Basic Research Program,jointed funded by Guangzhou University(Grant No.202201020186)。

摘　　要：We systematically investigate the phonon dichroism in proximitized graphene with broken time-reversal symmetry.We find that in the absence of any type of spin–orbit coupling,phonon dichroism vanishes.Linear and circular phonon dichroism occur in the presence of uniform(staggered)intrinsic spin–orbit coupling and ferromagnetic(antiferromagnetic)exchange coupling.All these situations can be distinguished by their specific behaviors of phonon absorption at the transition point.Our finding provides new possibilities to use phonon dichroism to identify the form of spin–orbit coupling and exchange coupling in proximitized graphene on various magnetic substrates.

关 键 词：phonon dichroism spin–orbit coupling proximitized graphene electron–phonon interaction 

分 类 号：O469[理学—凝聚态物理]