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arXiv · 1912.02337

Spin pumping into a spin glass material

Yusei Fujimoto·Masanori Ichioka·Hiroto Adachi
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Abstract

Spin pumping is a recently established means for generating a pure spin current, whereby spins are pumped from a magnet into the adjacent target material under the ferromagnetic resonance condition. We theoretically investigate the spin pumping from an insulating ferromagnet into spin glass materials. Combining a dynamic theory of spin glasses with the linear-response formulation of the spin pumping, we calculate temperature dependence of the spin pumping near the spin glass transition. The analysis predicts that a characteristic peak appears in the spin pumping signal, reflecting that the spin fluctuations slow down upon the onset of spin freezing.

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Yusei Fujimoto, Masanori Ichioka, Hiroto Adachi. 2019-12-05. Spin pumping into a spin glass material. https://doi.org/10.1103/physrevb.101.184412

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