Phenomenology of current-induced skyrmion motion in antiferromagnets

Autor: H Velkov, O Gomonay, M Beens, G Schwiete, A Brataas, J Sinova, R A Duine
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: New Journal of Physics, Vol 18, Iss 7, p 075016 (2016)
Druh dokumentu: article
ISSN: 1367-2630
DOI: 10.1088/1367-2630/18/7/075016
Popis: We study current-driven skyrmion motion in uniaxial thin film antiferromagnets in the presence of the Dzyaloshinskii–Moriya interactions and in an external magnetic field. We phenomenologically include relaxation and current-induced torques due to both spin–orbit coupling and spatially inhomogeneous magnetic textures in the equation for the Néel vector of the antiferromagnet. Using the collective coordinate approach we apply the theory to a two-dimensional antiferromagnetic skyrmion and estimate the skyrmion velocity under an applied DC electric current.
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