Current-Induced Spin Accumulation and Spin Transfer Torque in a Néel Domain Wall
P. Baláža, Ł. Szymczyka, V.K. Dugaevb,c and J. Barnaśa,d
aDepartment of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
bDepartment of Physics, Rzeszów University of Technology, al. Powstańców Warszawy 6, 35-959 Rzeszów, Poland
cDepartment of Physics & CFIF, Instituto Superior Técnico, TU Lisbon, av. Rovisco Pais, 1049-001 Lisbon, Portugal
dInstitute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
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Current-induced spin accumulation in a domain wall and the associated spin torque exerted on the wall are analyzed theoretically. The considerations are limited to a relatively thick Néel domain wall in a bulk ferromagnetic metal. The current-induced spin density is calculated using the linear response theory and the Green function formalism.
DOI: 10.12693/APhysPolA.121.1210
PACS numbers: 75.60.Ch, 75.70.Cn