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Large enhancement of spin pumping due to the surface bound states in normal metal–superconductor structures
Silaev, Mikhail (American Physical Society (APS), 2020)We show that the spin pumping from ferromagnetic insulator into the adjacent metallic spin sink can be strongly stimulated by the superconducting correlations. The key physical mechanism responsible for this effect is the ... -
Coupling the Higgs mode and ferromagnetic resonance in spin-split superconductors with Rashba spin-orbit coupling
Lu, Yao; Ojajärvi, Risto; Virtanen, P.; Silaev, M. A.; Heikkilä, Tero T. (American Physical Society (APS), 2022)We show that the Higgs mode of superconductors can couple with spin dynamics in the presence of a static spin-splitting field and Rashba spin-orbit coupling. The Higgs-spin coupling dramatically modifies the spin susceptibility ... -
Magnetoelectric effects in superconductors due to spin-orbit scattering : Nonlinear σ-model description
Virtanen, P.; Bergeret, F. S.; Tokatly, I. V. (American Physical Society (APS), 2021)We suggest a generalization of the nonlinear σ model for diffusive superconducting systems to account for magnetoelectric effects due to spin-orbit scattering. In the leading orders of spin-orbit strength and gradient ... -
Dynamic Spin-Triplet Order Induced by Alternating Electric Fields in Superconductor-Ferromagnet-Superconductor Josephson Junctions
Bobkova, I. V.; Bobkov, A. M.; Silaev, M. A. (American Physical Society (APS), 2021)Dynamic states offer extended possibilities to control the properties of quantum matter. Recent efforts are focused on studying the ordered states which appear exclusively under the time-dependent drives. Here, we demonstrate ... -
Current Rectification in Junctions with Spin-Split Superconductors
Ilić, Stefan; Virtanen, Pauli; Heikkilä, Tero T.; Bergeret, F. Sebastián (American Physical Society (APS), 2022)Spin-split superconductors exhibit an electron-hole asymmetric spin-resolved density of states, but the symmetry is restored upon averaging over spin. On the other hand, asymmetry appears again in tunneling junctions of ...