@article{39aae733823349519c6eb2b20e1f4004,
title = "Room temperature and low-field resonant enhancement of spin Seebeck effect in partially compensated magnets",
abstract = "Resonant enhancement of spin Seebeck effect (SSE) due to phonons was recently discovered in Y3Fe5O12 (YIG). This effect is explained by hybridization between the magnon and phonon dispersions. However, this effect was observed at low temperatures and high magnetic fields, limiting the scope for applications. Here we report observation of phonon-resonant enhancement of SSE at room temperature and low magnetic field. We observe in Lu2BiFe4GaO12 an enhancement 700% greater than that in a YIG film and at very low magnetic fields around 10− 1 T, almost one order of magnitude lower than that of YIG. The result can be explained by the change in the magnon dispersion induced by magnetic compensation due to the presence of non-magnetic ion substitutions. Our study provides a way to tune the magnon response in a crystal by chemical doping, with potential applications for spintronic devices.",
author = "R. Ramos and T. Hioki and Y. Hashimoto and T. Kikkawa and P. Frey and Kreil, {A. J.E.} and Vasyuchka, {V. I.} and Serga, {A. A.} and B. Hillebrands and E. Saitoh",
note = "Funding Information: The authors thank S. Ito from the Institute for Materials Research, Tohoku University, for performing TEM and STEM on our samples. We thank J. Barker for fruitful discussions. This work was supported by ERATO “Spin Quantum Rectification Project” (Grant no. JPMJER1402) and Grant-in-Aid for Scientific Research on Innovative Area, “Nano Spin Conversion Science” (Grant no. JP26103005), Grant-in-Aid for Scientific Research (S) (Grant no. JP19H05600), Grant-in-Aid for Research Activity Start-up (No. JP19K21031) from JSPS KAKENHI, JSPS Core-to-Core program “the International Research Center for New-Concept Spintronics Devices” Japan, and Deutsche For-schungsgemeinschaft (DFG) project HI 380/29-1 “Magnon currents for future spintronic applications” within the JSPS Core-to-Core Joint International Research and Collaborative Center and the NEC Corporation. Publisher Copyright: {\textcopyright} 2019, The Author(s).",
year = "2019",
month = dec,
day = "1",
doi = "10.1038/s41467-019-13121-5",
language = "English",
volume = "10",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",
}