Coupling the Higgs mode and ferromagnetic resonance in spin-split superconductors with Rashba spin-orbit coupling

Abstract

We consider the Higgs mode at nonzero momentum in superconductors and demonstrate that in the presence of Rashba spin-orbit coupling, it couples linearly with an external exchange field. The Higgs-spin coupling dramatically modifies the spin susceptibility near the superconducting critical temperature and consequently enhances the spin pumping effect in a ferromagnetic insulator/superconductor bilayer system. We show that this effect can be detected by measuring the magnon-induced voltage generated by the inverse spin Hall effect.

References in corpus (6)

• Electrodynamics of Correlated Electron Materials
• Amplitude Higgs mode and admittance in superconductors with a moving condensate
• Nonlinear electromagnetic response and Higgs mode excitation in BCS superconductors with impurities
• Nature and Raman signatures of the Higgs amplitude mode in the coexisting superconducting and charge-density-wave state
• Microscopic theory of spin transport at the interface between the superconductor and a ferromagnetic insulator
• Quasiclassical boundary conditions for spin-orbit coupled interfaces with spin-charge conversion

Cited by in corpus (4)

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• Hybrid collective excitations in topological superconductor/ferromagnetic insulator heterostructures