1 Department of Applied Physics, East China Jiaotong University, Nanchang 330013, China; 2 School of Computer Science, Jiangxi University of Chinese Medicine, Nanchang 330004, China
Abstract We investigate the band structure and Goos-Hänchen-like shift in ferromagnetic mass graphene junction modulated by the circularly polarized light. It is found that both spin and valley-related energy gaps can be opened by employing the circularly polarized light and the exchange field in mass graphene. The valley-polarized Goos-Hänchen-like shift can be identified in the presence of circularly polarized light, and the spin-polarized Goos-Hänchen-like shift can be realized with introduction of exchange field in mass graphene. Furthermore, the spin and valley polarization-related Goos-Hänchen-like shift can be achieved by combination of circularly polarized light and exchange field in mass graphene. It is hopeful that our work will be more conducive for future applications in graphene polarization transport devices.
Fund: Project supported by the Natural Science Foundation of Jiangxi Province, China (Grant Nos. 20224BAB201025 and 20202BABL201018), and the National Natural Science Foundation of China (Grant Nos. 11864012, 11764013, and 12164021).
Mei-Rong Liu(刘美荣), Zheng-Fang Liu(刘正方), Ruo-Long Zhang(张若龙), Xian-Bo Xiao(肖贤波), and Qing-Ping Wu(伍清萍) Spin- and valley-polarized Goos-Hänchen-like shift in ferromagnetic mass graphene junction with circularly polarized light 2023 Chin. Phys. B 32 037301
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