Ferromagnetic resonance modulation in d-wave superconductor/ferromagnetic insulator bilayer systems

Yuya Ominato; Ai Yamakage; Takeo Kato; Mamoru Matsuo

doi:10.1103/PhysRevB.105.205406

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Ferromagnetic resonance modulation in d-wave superconductor/ferromagnetic insulator bilayer systems

Yuya Ominato, Ai Yamakage, Takeo Kato, Mamoru Matsuo

DOI 10.1103/PhysRevB.105.205406 · Physical Review B

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Abstract

We investigate ferromagnetic resonance (FMR) modulation in d-wave superconductor (SC)/ferromagnetic insulator (FI) bilayer systems theoretically. The modulation of the Gilbert damping in these systems reflects the existence of nodes in the d-wave SC and shows power-law decay characteristics within the low-temperature and low-frequency limit. Our results indicate the effectiveness of the use of spin pumping as a probe technique to determine the symmetry of unconventional SCs with high sensitivity for nanoscale thin films.