Coherent Spin-Phonon Coupling in the Layered Ferrimagnet Mn3Si2Te6

L. M. Martinez; Y. Liu; C. Petrovic; S. Haldar; T. Griepe; U. Atxitia; M. Campbell; M. Pettes; R. P. Prasankumar; E. J. G. Santos; S. R. Singamaneni; P. Padmanabhan

doi:10.1038/s44306-025-00101-3

Coherent Spin-Phonon Coupling in the Layered Ferrimagnet Mn3Si2Te6

Materials Science 2026-01-05 v1

Authors: L. M. Martinez , Y. Liu , C. Petrovic , S. Haldar , T. Griepe , U. Atxitia , M. Campbell , M. Pettes , R. P. Prasankumar , E. J. G. Santos , S. R. Singamaneni , P. Padmanabhan

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Abstract

We utilize ultrafast photoexcitation to drive coherent lattice oscillations in the layered ferrimagnetic crystal Mn3Si2Te6, which significantly stiffen below the magnetic ordering temperature. We suggest that this is due to an exchange-mediated contraction of the lattice, stemming from strong magneto-structural coupling in this material. Additionally, simulations of the transient incoherent dynamics reveal the importance of spin relaxation channels mediated by optical and acoustic phonon scattering. Our findings highlight the importance of spin-lattice coupling in van der Waals magnets and a promising route for their dynamic optical control through their intertwined electronic, lattice, and spin degrees of freedom.

Keywords

spin-phonon coupling ferrimagnet mn3si2te6 ultrafast photoexcitation van der waals magnets magneto-structural coupling

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@article{arxiv.2308.14931,
  title  = {Coherent Spin-Phonon Coupling in the Layered Ferrimagnet Mn3Si2Te6},
  author = {L. M. Martinez and Y. Liu and C. Petrovic and S. Haldar and T. Griepe and U. Atxitia and M. Campbell and M. Pettes and R. P. Prasankumar and E. J. G. Santos and S. R. Singamaneni and P. Padmanabhan},
  journal= {arXiv preprint arXiv:2308.14931},
  year   = {2026}
}

Coherent Spin-Phonon Coupling in the Layered Ferrimagnet Mn3Si2Te6

Abstract

Keywords

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