Multiscale approach to spin transport in magnetic multilayers

2011/01/31 by Simone Borlenghi, Valentin Rychkov, Cyril Petitjean +1 · 1 citation
Mathematics · Physics and Astronomy · #Condensed matter physics #Domain (mathematical analysis) #Magnetic properties of thin films #Mathematics #Physics #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #Semiclassical physics #Specular reflection #Spin (aerodynamics) #Statistical physics #Theoretical and Computational Physics #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.84.035412

published as Phys. Rev. B 84, 035412 (2011)

openalex publication_date 2011/07/20 · arxiv created 2011/08/20 · arxiv updated 2015/03/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

This paper discusses two dual approaches to spin transport in magnetic multilayers: a direct, purely quantum, approach based on a tight-binding (TB) model and a semiclassical approach [continuous random matrix theory CRMT]. The combination of both approaches provides a systematic way to perform multiscale simulations of systems that contain relevant physics at scales larger (spin accumulation, spin diffusion) and smaller (specular reflexions, tunneling) than the elastic mean free paths of the layers. We show explicitly that CRMT and TB give consistent results in their common domain of applicability.

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• Thermally driven magnetic precession in spin valves