ACTA

Current-Induced Spin Accumulation and Spin Transfer Torque in a Néel Domain Wall

P. Baláž^a, Ł. Szymczyk^a, V.K. Dugaev^b,c and J. Barnaś^a,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