Physical Review B, volume 97, issue 1, publication number 014422

Ultrafast laser-induced changes of the magnetic anisotropy in a low-symmetry iron garnet film

Publication typeJournal Article
Publication date2018-01-19
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor3.7
ISSN24699950, 24699969, 10980121, 1550235X
Abstract
We explore a thermal mechanism of changing the anisotropy by femtosecond laser pulses in dielectric ferrimagnetic garnets by taking a low symmetry (YBiPrLu)3(FeGa)5O12 film grown on the (210)-oriented Gd3Ga5O12 substrate as a model media. We demonstrate by means of spectral magneto-optical pump-probe technique and phenomenological analysis, that the magnetization precession in such a film is triggered by laser-induced changes of the growth-induced magnetic anisotropy along with the well-known ultrafast inverse Faraday effect. The change of magnetic anisotropy is mediated by the lattice heating induced by laser pulses of arbitrary polarization on a picosecond time scale. We show that the orientation of the external magnetic field with respect to the magnetization easy plane noticeably affects the precession excited via the anisotropy change. Importantly, the relative contributions from the ultrafast inverse Faraday effect and the change of different growth-induced anisotropy parameters can be controlled by varying the applied magnetic field strength and direction. As a result, the amplitude and the initial phase of the excited magnetization precession can be gradually tuned.

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Shelukhin L. A. et al. Ultrafast laser-induced changes of the magnetic anisotropy in a low-symmetry iron garnet film // Physical Review B. 2018. Vol. 97. No. 1. 014422
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Shelukhin L. A., Pavlov V. V., Usachev P. A., Shamray P. Y., Pisarev R. V., Kalashnikova A. Ultrafast laser-induced changes of the magnetic anisotropy in a low-symmetry iron garnet film // Physical Review B. 2018. Vol. 97. No. 1. 014422
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RIS Copy
TY - JOUR
DO - 10.1103/PhysRevB.97.014422
UR - https://doi.org/10.1103%2FPhysRevB.97.014422
TI - Ultrafast laser-induced changes of the magnetic anisotropy in a low-symmetry iron garnet film
T2 - Physical Review B
AU - Shelukhin, L. A.
AU - Pavlov, Victor V.
AU - Usachev, P. A.
AU - Shamray, P. Yu.
AU - Pisarev, Roman V.
AU - Kalashnikova, A.M.
PY - 2018
DA - 2018/01/19 00:00:00
PB - American Physical Society (APS)
IS - 1
VL - 97
SN - 2469-9950
SN - 2469-9969
SN - 1098-0121
SN - 1550-235X
ER -
BibTex
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BibTex Copy
@article{2018_Shelukhin
author = {L. A. Shelukhin and Victor V. Pavlov and P. A. Usachev and P. Yu. Shamray and Roman V. Pisarev and A.M. Kalashnikova},
title = {Ultrafast laser-induced changes of the magnetic anisotropy in a low-symmetry iron garnet film},
journal = {Physical Review B},
year = {2018},
volume = {97},
publisher = {American Physical Society (APS)},
month = {jan},
url = {https://doi.org/10.1103%2FPhysRevB.97.014422},
number = {1},
doi = {10.1103/PhysRevB.97.014422}
}
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