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| Autores principales: | , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2405.10326 |
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| _version_ | 1866913353651191808 |
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| author | Zhou, Xu-Guang Yang, Zhuo Lee, Youjin Park, Jaena Kohama, Yoshimitsu Kindo, Koichi Matsuda, Yasuhiro H. Park, Je-Geun Janson, Oleg Miyata, Atsuhiko |
| author_facet | Zhou, Xu-Guang Yang, Zhuo Lee, Youjin Park, Jaena Kohama, Yoshimitsu Kindo, Koichi Matsuda, Yasuhiro H. Park, Je-Geun Janson, Oleg Miyata, Atsuhiko |
| contents | Magnetic-field control of fundamental optical properties is a crucial challenge in the engineering of multifunctional microdevices. Van der Waals (vdW) magnets retaining a magnetic order even in atomically thin layers, offer a promising platform for hosting exotic magneto-optical functionalities owing to their strong spin-charge coupling. Here, we demonstrate that a giant optical anisotropy can be controlled by magnetic fields in the vdW magnet FePS$_3$. The giant linear dichroism ($\sim$11%), observed below $T_{\text{N}}\!\sim\!120$ K, is nearly fully suppressed in a wide energy range from 1.6 to 2.0 eV, following the collapse of the zigzag magnetic order above 40 T. This remarkable phenomenon can be explained as a result of symmetry changes due to the spin order, enabling minority electrons of Fe$^{2+}$ to hop in a honeycomb lattice. The modification of spin-order symmetry by external fields provides a novel route for controllable anisotropic optical micro-devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_10326 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Giant Linear Dichroism Controlled by Magnetic Field in FePS$_3$ Zhou, Xu-Guang Yang, Zhuo Lee, Youjin Park, Jaena Kohama, Yoshimitsu Kindo, Koichi Matsuda, Yasuhiro H. Park, Je-Geun Janson, Oleg Miyata, Atsuhiko Materials Science Strongly Correlated Electrons Magnetic-field control of fundamental optical properties is a crucial challenge in the engineering of multifunctional microdevices. Van der Waals (vdW) magnets retaining a magnetic order even in atomically thin layers, offer a promising platform for hosting exotic magneto-optical functionalities owing to their strong spin-charge coupling. Here, we demonstrate that a giant optical anisotropy can be controlled by magnetic fields in the vdW magnet FePS$_3$. The giant linear dichroism ($\sim$11%), observed below $T_{\text{N}}\!\sim\!120$ K, is nearly fully suppressed in a wide energy range from 1.6 to 2.0 eV, following the collapse of the zigzag magnetic order above 40 T. This remarkable phenomenon can be explained as a result of symmetry changes due to the spin order, enabling minority electrons of Fe$^{2+}$ to hop in a honeycomb lattice. The modification of spin-order symmetry by external fields provides a novel route for controllable anisotropic optical micro-devices. |
| title | Giant Linear Dichroism Controlled by Magnetic Field in FePS$_3$ |
| topic | Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2405.10326 |