TY - JOUR
T1 - Damping of Magnetization Dynamics by Phonon Pumping
AU - Streib, Simon
AU - Keshtgar, Hedyeh
AU - Bauer, Gerrit E.W.
N1 - Funding Information:
This work is financially supported by the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) as well as by the Grant-in-Aid for Scientific Research on Innovative Area, “Nano Spin Conversion Science” (Grant No. 26103006). H. K. acknowledges support from the Iran Science Elites Federation. We acknowledge useful discussions with Yaroslav Blanter, Rembert Duine, Akashdeep Kamra, Eiji Saitoh, and Sanchar Sharma.
Publisher Copyright:
© 2018 American Physical Society.
PY - 2018/7/11
Y1 - 2018/7/11
N2 - We theoretically investigate pumping of phonons by the dynamics of a magnetic film into a nonmagnetic contact. The enhanced damping due to the loss of energy and angular momentum shows interference patterns as a function of the resonance frequency and magnetic film thickness that cannot be described by viscous ("Gilbert") damping. The phonon pumping depends on the magnetization direction as well as geometrical and material parameters and is observable, e.g., in thin films of yttrium iron garnet on a thick dielectric substrate.
AB - We theoretically investigate pumping of phonons by the dynamics of a magnetic film into a nonmagnetic contact. The enhanced damping due to the loss of energy and angular momentum shows interference patterns as a function of the resonance frequency and magnetic film thickness that cannot be described by viscous ("Gilbert") damping. The phonon pumping depends on the magnetization direction as well as geometrical and material parameters and is observable, e.g., in thin films of yttrium iron garnet on a thick dielectric substrate.
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U2 - 10.1103/PhysRevLett.121.027202
DO - 10.1103/PhysRevLett.121.027202
M3 - Article
C2 - 30085747
AN - SCOPUS:85049911716
SN - 0031-9007
VL - 121
JO - Physical Review Letters
JF - Physical Review Letters
IS - 2
M1 - 027202
ER -