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RESEARCH PRODUCT
Spin torques and magnetic texture dynamics driven by the supercurrent in superconductor/ferromagnet structures
A. M. BobkovI. V. BobkovaMikhail Silaevsubject
Josephson effectmagneettiset ominaisuudetMagnetic domainFOS: Physical sciences02 engineering and technology01 natural sciencessuprajohteetSuperconductivity (cond-mat.supr-con)Condensed Matter::Superconductivity0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)Torque010306 general physicsAdiabatic processSuperconductivityPhysicsspintronicsCondensed matter physicsta114Condensed Matter - Mesoscale and Nanoscale Physicsdomain wallsCondensed Matter - SuperconductivitySupercurrentspin transfer torque021001 nanoscience & nanotechnologyCondensed Matter::Mesoscopic Systems and Quantum Hall Effect3. Good healthFormalism (philosophy of mathematics)FerromagnetismCondensed Matter::Strongly Correlated Electrons0210 nano-technologydescription
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 field-like 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-04-02 |