Spin torques and magnetic texture dynamics driven by the supercurrent in superconductor/ferromagnet structures
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
Published inPhysical Review B
© 2018 American Physical Society
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.
PublisherAmerican Physical Society
Publication in research information system
MetadataShow full item record
Related funder(s)Academy of Finland
Funding program(s)Research post as Academy Research Fellow, AoF
Additional information about fundingThis work was supported by the Academy of Finland Research Fellow (Project No. 297439) and RFBR Grant No.18-02-00318. We thank Jan Aarts and Tero Heikkila for interesting discussions that initiated this project.
Showing items with similar title or keywords.
Rabinovich, D. S.; Bobkova, I. V.; Bobkov, A. M.; Silaev, M. A. (American Physical Society, 2019)We demonstrate that the hybrid structures consisting of a superconducting layer with an adjacent spin-textured ferromagnet demonstrate the variety of equilibrium magnetoelectric effects originating from coupling between ...
Ojajärvi, Risto; Heikkilä, Tero T.; Virtanen, P.; Silaev, M. A. (American Physical Society (APS), 2021)We develop a theory of the spin battery effect in superconductor/ferromagnetic insulator (SC/FI) systems taking into account the magnetic proximity effect. We demonstrate that the spin-energy mixing enabled by the ...
Golovchanskiy, I.A.; Abramov N.N.; Stolyarov, V.S.; Chichkov, V.I.; Silaev, M.; Shchetinin, I.V.; Golubov, A.A.; Ryazanov, V.V.; Ustinov, A.V.; Kupriyanov, M.Yu. (American Physical Society (APS), 2020)In this work, magnetization dynamics is studied in superconductor-ferromagnet-superconductor three-layered films in a wide frequency, field, and temperature ranges using the broad-band ferromagnetic resonance measurement ...
Domain wall induced modulation of low field H-T phase diagram in patterned superconductor-ferromagnet stripes Bhatia, Ekta; Barber, Zoe H.; Maasilta, Ilari; Senapati, Kartik (American Institute of Physics, 2019)We present a systematic study of the magnetic domain wall induced modulation of superconducting transition temperature (Tc) in Nb/Ni bilayer stripes. By varying the thickness of the Ni layer from 20 nm to 100 nm we have ...
Ojajärvi, Risto; Manninen, Juuso; Heikkilä, Tero T.; Virtanen, Pauli (American Physical Society, 2020)We study the effects of the coupling between magnetization dynamics and the electronic degrees of freedom in a heterostructure of a metallic nanomagnet with dynamic magnetization coupled with a superconductor containing a ...