Xin Hu, Yuya Ominato, Mamoru Matsuo
Published 2024-09-27Version 1
We develop a microscopic theory of the spin Seebeck effect (SSE) at the interface of a bilayer system of a ferromagnetic insulator and graphene. We compare the tunneling spin current at the interface due to the SSE and the spin pumping (SP), where the SSE and SP are induced by the temperature gradient and the microwave irradiation, respectively. We demonstrate that the thermally driven SSE exhibits a quantum oscillation pattern similar to that predicted in coherently driven SP. Additionally, we show a peak shift of the quantum oscillation due to the contribution of thermally excited magnons with higher frequencies, which becomes particularly pronounced at higher temperatures.
Launching magnons at the terahertz speed of the spin Seebeck effect
Spin Seebeck effect and thermoelectric phenomena in superconducting hybrids with magnetic textures or spin-orbit coupling
Spin Seebeck effect in paramagnets and antiferromagnets at elevated temperatures
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