The temperature dependence of quantum spin pumping generated using electron spin resonance with three-magnon splittings
Kouki Nakata
TL;DR
This paper investigates how temperature affects quantum spin pumping driven by electron spin resonance, highlighting the role of three-magnon splittings in magnon excitation and aligning with experimental observations.
Contribution
The study provides a theoretical analysis of temperature effects on quantum spin pumping using the Schwinger-Keldysh formalism, emphasizing three-magnon splittings.
Findings
Three-magnon splittings excite non-zero magnon modes.
Quantum spin pumping's temperature dependence is characterized.
Results qualitatively agree with experimental data.
Abstract
On the basis of the Schwinger-Keldysh formalism, we have closely investigated the temperature dependence of quantum spin pumping by electron spin resonance. We have clarified that three-magnon splittings excite non-zero modes of magnons and characterize the temperature dependence of quantum spin pumping. Our theoretical result qualitatively agrees with the experiment by Czeschka et al. that the mixing conductance is little influenced by temperature [F. D. Czeschka et al., Phys. Rev. Lett., 107, 046601 (2011)].
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