Spin transport in half-metallic ferromagnets

Article

关键词: ELECTRON-MAGNON INTERACTIONS;    ITINERANT FERROMAGNETISM;    BAND-STRUCTURE;    SPINTRONICS;   

DOI  :  10.1103/PhysRevB.94.184405

来源: SCIE

【 摘 要 】

We theoretically investigate spin transport in half-metallic ferromagnets at finite temperatures. The side-jump and skew-scattering contributions to spin Hall conductivity are derived using the Kubo formula. The electron-magnon interaction causes a finite density of states in the energy gap of the minority-spin band and induces spin Hall conductivity. We show that spin Hall conductivity is proportional to T-3/2, with T being temperature, and is sensitive to T. We propose that spin Hall conductivity may be a tool to study the minority-spin state.

【 授权许可】

Free