Spin- and valley-polarized Goos–Hänchen-like shift in ferromagnetic mass graphene junction with circularly polarized light

Abstract

We investigated 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 exchange fields in mass graphene. The valley-polarized Goos-Hänchen-Like shift can be identified in the presence of the circularly polarized light, and the spin-polarized Goos-Hänchen-Like shift can be realized with the introduction of an exchange field in mass graphene. Furthermore, the spin and valley polarization-related Goos-Hänchen-Like shift can be achieved with the combination of the circularly polarized light and exchange field in mass graphene. We hope that our work will be more conducive for future applications in graphene polarization transport devices.

Materials Science at Beihang: A Special Issue of Materials Lab Dedicated to the 70th Anniversary of Beihang University

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