Single-pulse strain-induced precessional dynamics of magnetization in Co-doped iron garnet
Abstract
Ultrafast control of magnetization through lattice excitation provides a route to manipulating magnetic order on short timescales, yet the role of transient strain in driving magnetization dynamics remains poorly understood. Here, single-shot pump-probe magneto-optical microscopy is used to resolve the structural and magnetic responses of cobalt-doped yttrium iron garnet to individual 5-ps mid-infrared pulses. The excitation generates a localized strain field together with an outward-propagating elastic wave. Concurrently, the magnetic contrast decreases following excitation and subsequently reverses on a timescale of approximately 1.5-2 ns before recovering to its initial state. The structural and magnetic responses exhibit closely correlated wavelength and pulse-energy dependences, indicating a common excitation pathway. Micromagnetic simulations incorporating transient strain reproduce the precessional reorientation of the magnetization within individual domains while largely preserving the labyrinthine domain morphology. These results identify transient lattice deformation as the link between single-pulse mid-infrared excitation and reversible precessional magnetization dynamics in Co-doped yttrium iron garnet.
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BibTeX
@misc{damas2026singlepulse,
title = {{Single-pulse strain-induced precessional dynamics of magnetization in Co-doped iron garnet}},
author = {Héloïse Damas and Carl S. Davies and Tomasz Zalewski and Petr M. Vetoshko and Vladimir I. Belotelov and Andrzej Stupakiewicz and Andrei Kirilyuk},
howpublished = {arXiv},
year = {2026},
month = aug,
doi = {10.48550/arxiv.2608.29245},
eprint = {2608.29245},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.29245},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Single-pulse strain-induced precessional dynamics of magnetization in Co-doped iron garnet
AU - Héloïse Damas
AU - Carl S. Davies
AU - Tomasz Zalewski
AU - Petr M. Vetoshko
AU - Vladimir I. Belotelov
AU - Andrzej Stupakiewicz
AU - Andrei Kirilyuk
PY - 2026
DA - 2026/08/29
PB - arXiv
DO - 10.48550/arxiv.2608.29245
UR - https://arxiv.org/abs/2608.29245
AB - Ultrafast control of magnetization through lattice excitation provides a route to manipulating magnetic order on short timescales, yet the role of transient strain in driving magnetization dynamics remains poorly understood. Here, single-shot pump-probe magneto-optical microscopy is used to resolve the structural and magnetic responses of cobalt-doped yttrium iron garnet to individual 5-ps mid-infrared pulses. The excitation generates a localized strain field together with an outward-propagating elastic wave. Concurrently, the magnetic contrast decreases following excitation and subsequently reverses on a timescale of approximately 1.5-2 ns before recovering to its initial state. The structural and magnetic responses exhibit closely correlated wavelength and pulse-energy dependences, indicating a common excitation pathway. Micromagnetic simulations incorporating transient strain reproduce the precessional reorientation of the magnetization within individual domains while largely preserving the labyrinthine domain morphology. These results identify transient lattice deformation as the link between single-pulse mid-infrared excitation and reversible precessional magnetization dynamics in Co-doped yttrium iron garnet.
ER -