TY - JOUR
T1 - Magnetic Bragg peak enhancement under ultrasound injection
AU - Shamoto, Shin Ichi
AU - Akatsu, Mitsuhiro
AU - Matsuura, Masato
AU - Ohira-Kawamura, Seiko
AU - Harii, Kazuya
AU - Ono, Masao
AU - Chang, Lieh Jeng
AU - Ito, Takashi U.
AU - Nemoto, Yuichi
AU - Ieda, Jun'Ichi
N1 - Funding Information:
This work at J-PARC has been performed at DNA(BL02) and AMATERAS(BL14) under the Proposals No. 2017L0300, No. 2014B0157, No. 2015I0002, No. 2016A0318, and No. 2018B0012. We acknowledge Drs. T. Yamada, M. Kofu, H. Kira, K. Shibata, T. Kikkawa, N. Sato, M. Mori, Y. Nambu, S. E. Barnes, and S. Maekawa for discussions, CROSS sample environment team for experimental assistance, and Mrs. M. Usami, Y. Baba in JAEA technical support team for their help. This work was supported by the JAEA Fund for Exploratory Research (Houga Fund), Iketani Science and Technology Foundation and KAKENHI JP25287094, JP16K05424, and JP21H04643 from MEXT Japan.
Publisher Copyright:
© 2022 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
PY - 2022/3
Y1 - 2022/3
N2 - Ultrasound injection effect on a magnetic Bragg peak of yttrium iron garnet has been studied by quasielastic neutron scattering. The magnetic Bragg peak is vastly enhanced with decreasing temperature. The energy width increases proportionally to the square root of the sample temperature increase induced by the ultrasound injection. Based on a liquid model, the estimated effective mass becomes light when magnetic domain walls are removed under a magnetic field. Because the magnetic Bragg peak is enhanced by the lattice vibration, the enhancement is expected to closely relate to the spin-lattice coupling. The sharp drop is observed above 100 K for the longitudinal mode, indicating the degradation of the spin-lattice coupling. It is consistent with the suppression of the spin Seebeck effect when the temperature rises above 100 K, demonstrating the spin-lattice coupling as the degradation mechanism.
AB - Ultrasound injection effect on a magnetic Bragg peak of yttrium iron garnet has been studied by quasielastic neutron scattering. The magnetic Bragg peak is vastly enhanced with decreasing temperature. The energy width increases proportionally to the square root of the sample temperature increase induced by the ultrasound injection. Based on a liquid model, the estimated effective mass becomes light when magnetic domain walls are removed under a magnetic field. Because the magnetic Bragg peak is enhanced by the lattice vibration, the enhancement is expected to closely relate to the spin-lattice coupling. The sharp drop is observed above 100 K for the longitudinal mode, indicating the degradation of the spin-lattice coupling. It is consistent with the suppression of the spin Seebeck effect when the temperature rises above 100 K, demonstrating the spin-lattice coupling as the degradation mechanism.
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U2 - 10.1103/PhysRevResearch.4.013245
DO - 10.1103/PhysRevResearch.4.013245
M3 - Article
AN - SCOPUS:85129089369
SN - 2643-1564
VL - 4
JO - Physical Review Research
JF - Physical Review Research
IS - 1
M1 - A190
ER -