TY - JOUR
T1 - Optical determination of the exchange stiffness constant in an iron garnet
AU - Matsumoto, Keita
AU - Brächer, Thomas
AU - Pirro, Philipp
AU - Fischer, Tobias
AU - Bozhko, Dmytro
AU - Geilen, Moritz
AU - Heussner, Frank
AU - Meyer, Thomas
AU - Hillebrands, Burkard
AU - Satoh, Takuya
N1 - Funding Information:
Acknowledgments KM acknowledges support from the JSPS Core-to-Core Program (A. Advanced Research Networks) during his stay at Technische Universität Kaiserslautern. Financial support by the Deutsche Forschungsge-meinschaft (DFG) via the Graduate School Materials Science in Mainz (MAINZ) through the Excellence Initiative (GSC 266) and the Project B01 of the SFB=TRR 173 Spin + X, the European Research Council Starting Grant 678309 MagnonCircuits, as well as by the Nachwuchsring of the TU Kaiserslautern is gratefully acknowledged. TS was financially supported by JSPS KAKENHI Grant Numbers JP15H05454 and JP26103004.
Funding Information:
KM acknowledges support from the JSPS Core-to-Core Program (A. Advanced Research Networks) during his stay at Technische Universität Kaiserslautern. Financial support by the Deutsche Forschungsgemeinschaft (DFG) via the Graduate School Materials Science in Mainz (MAINZ) through the Excellence Initiative (GSC 266) and the Project B01 of the SFB/TRR 173 Spin + X, the European Research Council Starting Grant 678309 Magnon Circuits, as well as by the Nachwuchsring of the TU Kaiserslautern is gratefully acknowledged. TS was financially supported by JSPS KAKENHI Grant Numbers JP15H05454 and JP26103004.
Publisher Copyright:
© 2018 The Japan Society of Applied Physics.
PY - 2018/7
Y1 - 2018/7
N2 - Brillouin light scattering measurements were performed in the backscattering geometry on a Bi-substituted rare earth iron garnet. We observed two different peaks: One is attributed to a surface spin wave in the dipole-exchange regime while the other is referred to as a backscattering magnon mode, because the incident light in this case was scattered backward by exchange-dominated spin wave inside the material. We propose a method to estimate the exchange stiffness constant from the frequency of the backscattering magnon mode. The obtained value is comparable with the previously reported values for Y3Fe5O12.
AB - Brillouin light scattering measurements were performed in the backscattering geometry on a Bi-substituted rare earth iron garnet. We observed two different peaks: One is attributed to a surface spin wave in the dipole-exchange regime while the other is referred to as a backscattering magnon mode, because the incident light in this case was scattered backward by exchange-dominated spin wave inside the material. We propose a method to estimate the exchange stiffness constant from the frequency of the backscattering magnon mode. The obtained value is comparable with the previously reported values for Y3Fe5O12.
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U2 - 10.7567/JJAP.57.070308
DO - 10.7567/JJAP.57.070308
M3 - Article
AN - SCOPUS:85049402292
SN - 0021-4922
VL - 57
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
IS - 7
M1 - 070308
ER -