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Flebus, Benedetta (author), Shen, K. (author), Kikkawa, Takashi (author), Uchida, Ken Ichi (author), Qiu, Zhiyong (author), Saitoh, Eiji (author), Duine, Rembert A. (author), Bauer, G.E. (author)
We theoretically study the effects of strong magnetoelastic coupling on the transport properties of magnetic insulators. We develop a Boltzmann transport theory for the mixed magnon-phonon modes ("magnon polarons") and determine transport coefficients and the spin diffusion length. Magnon-polaron formation causes anomalous features in the...
journal article 2017
Kikkawa, Takashi (author), Shen, K. (author), Flebus, Benedetta (author), Duine, Rembert A. (author), Uchida, Ken Ichi (author), Qiu, Zhiyong (author), Bauer, G.E. (author), Saitoh, Eiji (author)
Sharp structures in the magnetic field-dependent spin Seebeck effect (SSE) voltages of Pt/Y3Fe5O12 at low temperatures are attributed to the magnon-phonon interaction. Experimental results are well reproduced by a Boltzmann theory that includes magnetoelastic coupling. The SSE anomalies coincide with magnetic fields tuned to the threshold of...
journal article 2016