Spin-Transfer and Exchange Torques in Ferromagnetic Superconductors

Abstract

We consider how superconducting correlations influence spin-transfer torques in ferromagnetic superconductors. It is demonstrated that there is a novel torque arising from particle-hole interference that depends on the U(1) phase associated with the superconducting order parameter. We also show that there is an equilibrium exchange torque between two ferromagnetic superconductors in contact via a normal metal mediated by Andreev states. The latter equilibrium magnetic torque is also sensitive to spin-resolved phase differences in the superconducting order parameters as well as to an externally applied phase difference.

5 pages, 3 figures. Accepted for publication in PRL

References in corpus (8)

• Spin Transfer Torques
• A spin triplet supercurrent through the half-metallic ferromagnet CrO2
• Superconductivity on the border of weak itinerant ferromagnetism in UCoGe
• Quantum transport in noncentrosymmetric superconductors and thermodynamics of ferromagnetic superconductors
• Spin supercurrent in Josephson contacts with noncollinear ferromagnets
• Dynamics of spin transport in voltage-biased Josephson junctions
• Spin-precession-assisted supercurrent in a superconducting quantum point contact coupled to a single-molecule magnet
• Manipulating nonequilibrium magnetism through superconductors

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• Superconductivity-induced change in magnetic anisotropy in epitaxial ferromagnet-superconductor hybrids with spin-orbit interaction
• Giant magnetoresistance and anomalous transport in phosphorene-based multilayers with noncollinear magnetization
• Josephson effect through magnetic skyrmion
• Spin Transport in Half-Metallic Ferromagnet-Superconductor Junctions
• Adiabatic and nonadiabatic spin torques induced by spin-triplet supercurrent
• Supercurrent-Induced Spin-Orbit Torques
• Supercurrent-induced Skyrmion dynamics and Tunable Weyl points in Chiral Magnet with Superconductivity
• Spin supercurrent in superconductor/ferromagnet van-der-Waals heterostructures
• Magnetoelectric effects in superconductor/ferromagnet bilayers
• Electronic structure and Magneto-transport in MoS${}_2$/Phosphorene van der Waals heterostructure
• Proximity effect and p-wave superconductivity in s-wave superconductor/helimagnet heterostructures
• Generation and control of noncollinear magnetism by supercurrent
• Spin torques and anomalous velocity in spin textures induced by fast electron injection from topological ferromagnets: The role of gauge fields
• Triplet correlations in superconductor/antiferromagnet heterostructures: dependence on type of antiferromagnetic ordering