Spin pumping into quantum spin nematic states
Mesoscale and Nanoscale Physics
2025-04-22 v2
Abstract
We theoretically study spin pumping into a spin-nematic state in a junction system composed of a ferromagnetic insulator and a spin-nematic insulator, described by using the spin-1 bilinear-biquadratic model. We analyze an increase of the Gilbert damping in ferromagnetic resonance (FMR) due to an interfacial exchange coupling within a mean-field theory based on the Schwinger boson method. We find that the two Schwinger bosons contribute in distinct ways to spin pumping. We report a detailed dependence of the spin pumping on a resonant frequency, a magnetic field, and an interface type.
Keywords
Cite
@article{arxiv.2409.08246,
title = {Spin pumping into quantum spin nematic states},
author = {Takuto Ishikawa and Wolfgang Belzig and Takeo Kato},
journal= {arXiv preprint arXiv:2409.08246},
year = {2025}
}
Comments
13 pages, 6 figures