Spin transport in half-metallic ferromagnets

Abstract

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.

6 pages, 4 figures

References in corpus (7)

• Direct electronic measurement of the spin Hall effect
• Spin Seebeck insulator
• Half-metallic ferromagnets: From band structure to many-body effects
• Observation of the Spin-Seebeck Effect in a Ferromagnetic Semiconductor
• Theory of magnon-driven spin Seebeck effect
• Theory of Spin Hall conductivity in n-doped GaAs
• Non-quasiparticle states in Co${}_2$MnSi evidenced through magnetic tunnel junction spectroscopy measurements

Cited by in corpus (3)

• Magnetization switching induced by spin-orbit torque from Co2MnGa magnetic Weyl semimetal thin films
• Half-Metallic Ferromagnets and Spin Gapless Semiconductors
• Peculiarities of electronic transport and magnetic state in half-metallic ferromagnetic and spin gapless semiconducting Heusler alloys