2010/02/28 by Noriyuki Nakabayashi, Akihito Takeuchi, Kazuhiro Hosono +2 · 11 citations
Engineering · Materials Science · Physics and Astronomy · Psychology · #Condensed matter physics #Ferromagnetism #Magnetic Properties and Applications #Magnetic field #Magnetic properties of thin films #Magnetization #Magneto-Optical Properties and Applications #Materials science #Metal #Metallurgy #Physics #Psychology #Quantum mechanics #Relaxation (psychology) #Social psychology #Spin (aerodynamics) #Spin-transfer torque #Thermodynamics #Torque #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.82.014403
published in Physical Review B 82(1) (American Physical Society)
arxiv created 2010/04/28 · openalex publication_date 2010/07/08 · arxiv updated 2015/05/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Spin transport driven by an external electric field in uniform metallic ferromagnets with the spin-orbit interaction arising from random impurities is studied microscopically. Spin relaxation torque T is shown to be written by spatial derivatives of the electric field, but with anisotropy arising from the magnetization. The field-driven contribution of the spin current is also anisotropic. The diffusive spin current is shown to be written as a gradient of the spin chemical potential, and the linear-response expression for the spin chemical potential is derived. It is discussed that the \ensuremathβ term in the spin-transfer torque can also be anisotropic.