Phenomenology of current-induced skyrmion motion in antiferromagnets

0471289 - FZÚ 2017 RIV GB eng J - Článek v odborném periodiku
Velkov, H. - Gomonay, O. - Beens, M. - Schwiete, G. - Brataas, A. - Sinova, Jairo - Duine, R.A.
Phenomenology of current-induced skyrmion motion in antiferromagnets.
New Journal of Physics. Roč. 18, Jul (2016), 1-6, č. článku 075016. ISSN 1367-2630. E-ISSN 1367-2630
Institucionální podpora: RVO:68378271
Klíčová slova: antiferromagnetic skyrmions * phenomenology * spin-orbit torques * electric currents * magnetization dynamics * Dzyaloshinskii-Moriya interactions
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 3.786, rok: 2016

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 Neel 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.
Trvalý link: http://hdl.handle.net/11104/0268678