@article{80ca97e7b5c944feb91348e2c94b5481,
title = "Coherent Spin Pumping in a Strongly Coupled Magnon-Magnon Hybrid System",
abstract = "We experimentally identify coherent spin pumping in the magnon-magnon hybrid modes of yttrium iron garnet/permalloy (YIG/Py) bilayers. By reducing the YIG and Py thicknesses, the strong interfacial exchange coupling leads to large avoided crossings between the uniform mode of Py and the spin wave modes of YIG enabling accurate determination of modification of the linewidths due to the dampinglike torque. We identify additional linewidth suppression and enhancement for the in-phase and out-of-phase hybrid modes, respectively, which can be interpreted as concerted dampinglike torque from spin pumping. Furthermore, varying the Py thickness shows that both the fieldlike and dampinglike couplings vary like 1/tPy, verifying the prediction by the coupled Landau-Lifshitz equations.",
author = "Yi Li and Wei Cao and Amin, {Vivek P.} and Zhizhi Zhang and Jonathan Gibbons and Joseph Sklenar and John Pearson and Haney, {Paul M.} and Stiles, {Mark D.} and Bailey, {William E.} and Valentine Novosad and Axel Hoffmann and Wei Zhang",
note = "Funding Information: Work at Argonne on sample preparation was supported by the U.S. DOE, Office of Science, Office of Basic Energy Sciences, Materials Science and Engineering Division under Contract No. DE-AC02-06CH11357, while work at Argonne and National Institute of Standards and Technology (NIST) on data analysis and theoretical modeling was supported as part of Quantum Materials for Energy Efficient Neuromorphic Computing, an Energy Frontier Research Center funded by the U.S. DOE, Office of Science. Work on experimental design at Oakland University was supported by AFOSR under Grant No. FA9550-19-1-0254 and the NIST Center for Nanoscale Science and Technology, Award No. 70NANB14H209, through the University of Maryland. Work on microwave spectroscopy at Columbia University was supported by NSF under Grant No. NSF-DMR1411160. Publisher Copyright: {\textcopyright} 2020 American Physical Society.",
year = "2020",
month = mar,
day = "20",
doi = "10.1103/PhysRevLett.124.117202",
language = "English (US)",
volume = "124",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "11",
}