Spin torques and magnetic texture dynamics driven by the supercurrent in superconductor/ferromagnet structures

I. V. Bobkova; A. M. Bobkov; M. A. Silaev

doi:10.1103/PhysRevB.98.014521

← Back to search

Spin torques and magnetic texture dynamics driven by the supercurrent in superconductor/ferromagnet structures

I. V. Bobkova, A. M. Bobkov, M. A. Silaev

DOI 10.1103/PhysRevB.98.014521 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

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.