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Peer-reviewedCC BY-NC-ND 4.0Nature Communications

Manipulation of ferromagnetism with a light-driven nonlinear Edelstein-Zeeman field

  • Yinchuan Lv1,2
  • W. Joe Meese1,3
  • Azel Murzabekova1,2
  • Jennifer Freedberg1,2
  • Changjun Lee1,2
  • Yiming Sun1,2
  • Joshua Wakefield4
  • Takashi Kurumaji5
  • Joseph Checkelsky4
  • Fahad Mahmood1,2
5 affiliations
  1. 1Department of Physics, The Grainger College of Engineering, University of Illinois Urbana-Champaign, Urbana, IL USA
  2. 2Materials Research Laboratory, The Grainger College of Engineering, University of Illinois Urbana-Champaign, Urbana, IL USA
  3. 3Anthony J. Leggett Institute for Condensed Matter Theory, The Grainger College of Engineering, University of Illinois Urbana-Champaign, Urbana, IL USA
  4. 4Department of Physics, Massachusetts Institute of Technology, Cambridge, MA USA
  5. 5Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, CA USA
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Abstract

Optical control of magnetization is often symmetry-forbidden because electric fields and magnetization transform differently under inversion and time-reversal. However, through even-order nonlinear response, optical excitation can generate a nonequilibrium magnetic density (the nonlinear Edelstein effect) that acts as an internal Edelstein-Zeeman field coupling to slower magnetic degrees of freedom. Here we demonstrate non-thermal, ultrafast optical control of ferromagnetism in the centrosymmetric van der Waals semiconductor Cr2Ge2Te6 via a resonant nonlinear Edelstein effect. Using time-domain THz emission spectroscopy under near-infrared excitation, we directly observe magnetic dipole radiation arising from optically driven magnetization dynamics. The polarization, fluence, and temperature dependences of the THz emission are quantitatively captured by a mean-field description of a weakly anisotropic Heisenberg ferromagnet subject to an Edelstein-Zeeman field. Our results establish a general nonequilibrium route to optical control of magnetism in centrosymmetric materials.

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Cite

BibTeXRIS
BibTeX
@article{lv2026manipulation,
  title = {{Manipulation of ferromagnetism with a light-driven nonlinear Edelstein-Zeeman field}},
  author = {Yinchuan Lv and W. Joe Meese and Azel Murzabekova and Jennifer Freedberg and Changjun Lee and Yiming Sun and Joshua Wakefield and Takashi Kurumaji and Joseph Checkelsky and Fahad Mahmood},
  journal = {Nature Communications},
  year = {2026},
  month = sep,
  doi = {10.1038/s41467-026-77965-4},
  url = {https://doi.org/10.1038/s41467-026-77965-4},
  note = {CC BY-NC-ND 4.0},
}
RIS
TY  - JOUR
TI  - Manipulation of ferromagnetism with a light-driven nonlinear Edelstein-Zeeman field
AU  - Yinchuan Lv
AU  - W. Joe Meese
AU  - Azel Murzabekova
AU  - Jennifer Freedberg
AU  - Changjun Lee
AU  - Yiming Sun
AU  - Joshua Wakefield
AU  - Takashi Kurumaji
AU  - Joseph Checkelsky
AU  - Fahad Mahmood
PY  - 2026
DA  - 2026/09/26
JO  - Nature Communications
DO  - 10.1038/s41467-026-77965-4
UR  - https://doi.org/10.1038/s41467-026-77965-4
AB  - Optical control of magnetization is often symmetry-forbidden because electric fields and magnetization transform differently under inversion and time-reversal. However, through even-order nonlinear response, optical excitation can generate a nonequilibrium magnetic density (the nonlinear Edelstein effect) that acts as an internal Edelstein-Zeeman field coupling to slower magnetic degrees of freedom. Here we demonstrate non-thermal, ultrafast optical control of ferromagnetism in the centrosymmetric van der Waals semiconductor Cr2Ge2Te6 via a resonant nonlinear Edelstein effect. Using time-domain THz emission spectroscopy under near-infrared excitation, we directly observe magnetic dipole radiation arising from optically driven magnetization dynamics. The polarization, fluence, and temperature dependences of the THz emission are quantitatively captured by a mean-field description of a weakly anisotropic Heisenberg ferromagnet subject to an Edelstein-Zeeman field. Our results establish a general nonequilibrium route to optical control of magnetism in centrosymmetric materials.
SN  - 2041-1723
ER  -