Light-Induced Hysteresis of Electronic Polarization in Anti-Ferromagnet FePS3
© 2025 Wiley‐VCH GmbH.
| Publié dans: | Advanced materials (Deerfield Beach, Fla.). - 1998. - 37(2025), 8 vom: 20. Feb., Seite e2413484 |
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| Auteur principal: | |
| Autres auteurs: | , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2025
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| Accès à la collection: | Advanced materials (Deerfield Beach, Fla.) |
| Sujets: | Journal Article anti‐ferromagnet electronic polarization hysteresis light |
| Résumé: | © 2025 Wiley‐VCH GmbH. Research on manipulating materials using light has garnered significant interest, yet examples of controlling electronic polarization in magnetic materials remain scarce. Here, the hysteresis of electronic polarization in the anti-ferromagnetic semiconductor FePS3 is demonstrated via light. Below the Néel temperature, linear dichroism (i.e., optical anisotropy) without structural symmetry breaking is observed. Light-induced net polarization aligns along the a-axis (zigzag direction) at 1.6 eV due to the dipolar polarization and along the b-axis (armchair direction) at 2.0 eV due to the combined effects of dipolar and octupolar polarizations, resulting from charge transfer from the armchair to the zigzag direction by light. Unexpected hysteresis of the electronic polarization occurs at 2.0 eV due to the octupolar polarization, in contrast to the absence of such hysteresis at 1.6 eV. This is attributed to a symmetry breaking of the light-induced phase of FePS3 involving electronic polarization within the spin lattice. Here a new mechanism is suggested for generating and controlling electronic polarization in magnetic materials using light, with implications for future device applications |
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| Description: | Date Revised 25.02.2025 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1521-4095 |
| DOI: | 10.1002/adma.202413484 |