@article{d04a61e980da4c76a0a9f31dceda1392,
title = "Spin Seebeck effect in insulating epitaxial γ−Fe2O3 thin films",
abstract = "We report the fabrication of high crystal quality epitaxial thin films of maghemite (γ−Fe2O3), a classic ferrimagnetic insulating iron oxide. Spin Seebeck effect (SSE) measurements in γ−Fe2O3/Pt bilayers as a function of sample preparation conditions and temperature yield a SSE coefficient of 0.5(1) μV/K at room temperature. Dependence on temperature allows us to estimate the magnon diffusion length in maghemite to be in the range of tens of nanometers, in good agreement with that of conducting iron oxide magnetite (Fe3O4), establishing the relevance of spin currents of magnonic origin in magnetic iron oxides.",
author = "P. Jim{\'e}nez-Cavero and I. Lucas and A. Anad{\'o}n and R. Ramos and T. Niizeki and Aguirre, {M. H.} and Algarabel, {P. A.} and K. Uchida and Ibarra, {M. R.} and E. Saitoh and L. Morell{\'o}n",
note = "Funding Information: This work was supported by the Spanish Ministry of Science (through Project Nos. MAT2014-51982-C2-R and C1-R, including FEDER funding) and the Arag{\'o}n Regional government (Project No. E26). Pilar Jim{\'e}nez-Cavero acknowledges Spanish MECD for support through FPU program (Reference No. FPU014/02546). The authors acknowledge the Advanced Microscopy Laboratory-INA University of Zaragoza for offering access to their instruments. This work was supported by PRESTO “Phase Interfaces for Highly Efficient Energy Utilization” and ERATO “Spin Quantum Rectification” from JST, Japan, Grant-in-Aid for Scientific Research (A) (No. 15H02012), Grant-in-Aid for Scientific Research on Innovative Area, “Nano Spin Conversion Science” (No. 26103005) from MEXT, Japan, NEC Corporation, and the Noguchi Institute. Publisher Copyright: {\textcopyright} 2017 Author(s).",
year = "2017",
month = feb,
day = "1",
doi = "10.1063/1.4975618",
language = "English",
volume = "5",
journal = "APL Materials",
issn = "2166-532X",
publisher = "American Institute of Physics",
number = "2",
}