A1 Journal article (refereed)
Spin torques and magnetic texture dynamics driven by the supercurrent in superconductor/ferromagnet structures (2018)

Bobkova, I. V., Bobkov, A. M., & Silaev, M. (2018). Spin torques and magnetic texture dynamics driven by the supercurrent in superconductor/ferromagnet structures. Physical Review B, 98(1), Article 014521. https://doi.org/10.1103/physrevb.98.014521

JYU authors or editors

Silaev, Mikhail

Publication details

All authors or editors: Bobkova, I. V.; Bobkov, A. M.; Silaev, Mikhail

Journal or series: Physical Review B

ISSN: 2469-9950

eISSN: 2469-9969

Publication year: 2018

Volume: 98

Issue number: 1

Article number: 014521

Publisher: American Physical Society

Place of Publication: College Park

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/physrevb.98.014521

Publication open access: Other way freely accessible online

Publication channel open access:

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/59185

Web address where publication is available: https://arxiv.org/abs/1804.00718

Abstract

We introduce the general formalism to describe spin torques induced by the supercurrents injected from the adjacent superconducting electrodes into the spin-textured ferromagnets. By considering the adiabatic limit for the equal-spin superconducting correlations in the ferromagnet, we show that the supercurrent can generate both the fieldlike spin-transfer torque and the spin-orbital torque. These dissipationless spin torques are expressed through the current-induced corrections to the effective field derived from the system energy. The general formalism is applied to show that the supercurrent can either shift or move the magnetic domain walls depending on their structure and the type of spin-orbital interaction in the system. These results can be used for the prediction and interpretation of the experiments studying magnetic texture dynamics in superconductor/ferromagnet/superconductor Josephson junctions and other hybrid structures.

Keywords: superconductors; magnetic properties

Free keywords: domain walls; spin transfer torque; spintronics

Fields of science: