Spin-current coherence peak in superconductor/magnet junctions

Abstract

Coherence peak effects in a superconductor induced by a thermal spin current are reported. We measured inverse spin Hall effects induced by spin injection from a ferrimagnetic insulator Y${}_3$Fe${}_5$O${}_{12}$ into a superconductor NbN using longitudinal spin Seebeck effects. In the vicinity of the superconducting transition temperature of the NbN, a large enhancement of the spin Seebeck voltage is observed, whose sign is opposite to that for the vortex Nernst effect, but is consistent with a calculation for a coherence peak effect in the superconductor NbN.

arXiv comment5 pages, 4 figures

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Cited by in corpus (16)

• Microscopic theory of spin transport at the interface between the superconductor and a ferromagnetic insulator
• Spin transport parameters of NbN thin films characterised by spin pumping experiments
• Giant transition-state enhancement of quasiparticle spin-Hall effect in an exchange-spin-split superconductor detected by non-local magnon spin-transport
• Temperature-dependent spin-transport and current-induced torques in superconductor/ferromagnet heterostructures
• Thermally induced spin-transfer torques in superconductor/ferromagnet bilayers
• Ferromagnetic resonance modulation in $d$-wave superconductor/ferromagnetic insulator bilayer systems
• Spin-pumping from a ferromagnetic insulator to an unconventional superconductor with interfacial Andreev bound-states
• Spin diffusion equation in superconductors in the vicinity of Tc
• Spin-pumping in superconductor-antiferromagnetic insulator bilayers
• Spin current injection at magnetic insulator/superconductor interfaces
• Spin Hall effect generated by fluctuating vortices in type-II superconductors
• Cryogenic spin Peltier effect detected by a RuO${}_2$-AlO${}_x$ on-chip microthermometer
• Spin pumping into a spin glass material
• Time-dependent Ginzburg-Landau theory of the vortex spin Hall effect
• Intrinsic spin Nernst effect in topological Dirac and magnetic Weyl semimetals
• AC/DC spin current in ferromagnet/superconductor/normal metal trilayer systems