Electronic structure of above-room-temperature van der Waals ferromagnet Fe$_3$GaTe$_2$
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866914715391754240 |
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| author | Lee, Ji-Eun Yan, Shaohua Oh, Sehoon Hwang, Jinwoong Denlinger, Jonathan D. Hwang, Choongyu Lei, Hechang Mo, Sung-Kwan Park, Se Young Ryu, Hyejin |
| author_facet | Lee, Ji-Eun Yan, Shaohua Oh, Sehoon Hwang, Jinwoong Denlinger, Jonathan D. Hwang, Choongyu Lei, Hechang Mo, Sung-Kwan Park, Se Young Ryu, Hyejin |
| contents | Fe$_3$GaTe$_2$, a recently discovered van der Waals ferromagnet, demonstrates intrinsic ferromagnetism above room temperature, necessitating a comprehensive investigation of the microscopic origins of its high Curie temperature ($\textit{T}$$_C$). In this study, we reveal the electronic structure of Fe$_3$GaTe$_2$ in its ferromagnetic ground state using angle-resolved photoemission spectroscopy and density functional theory calculations. Our results establish a consistent correspondence between the measured band structure and theoretical calculations, underscoring the significant contributions of the Heisenberg exchange interaction ($\textit{J}$$_{ex}$) and magnetic anisotropy energy to the development of the high-$\textit{T}$$_C$ ferromagnetic ordering in Fe$_3$GaTe$_2$. Intriguingly, we observe substantial modifications to these crucial driving factors through doping, which we attribute to alterations in multiple spin-splitting bands near the Fermi level. These findings provide valuable insights into the underlying electronic structure and its correlation with the emergence of high-$\textit{T}$$_C$ ferromagnetic ordering in Fe$_3$GaTe$_2$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_09846 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Electronic structure of above-room-temperature van der Waals ferromagnet Fe$_3$GaTe$_2$ Lee, Ji-Eun Yan, Shaohua Oh, Sehoon Hwang, Jinwoong Denlinger, Jonathan D. Hwang, Choongyu Lei, Hechang Mo, Sung-Kwan Park, Se Young Ryu, Hyejin Materials Science Fe$_3$GaTe$_2$, a recently discovered van der Waals ferromagnet, demonstrates intrinsic ferromagnetism above room temperature, necessitating a comprehensive investigation of the microscopic origins of its high Curie temperature ($\textit{T}$$_C$). In this study, we reveal the electronic structure of Fe$_3$GaTe$_2$ in its ferromagnetic ground state using angle-resolved photoemission spectroscopy and density functional theory calculations. Our results establish a consistent correspondence between the measured band structure and theoretical calculations, underscoring the significant contributions of the Heisenberg exchange interaction ($\textit{J}$$_{ex}$) and magnetic anisotropy energy to the development of the high-$\textit{T}$$_C$ ferromagnetic ordering in Fe$_3$GaTe$_2$. Intriguingly, we observe substantial modifications to these crucial driving factors through doping, which we attribute to alterations in multiple spin-splitting bands near the Fermi level. These findings provide valuable insights into the underlying electronic structure and its correlation with the emergence of high-$\textit{T}$$_C$ ferromagnetic ordering in Fe$_3$GaTe$_2$. |
| title | Electronic structure of above-room-temperature van der Waals ferromagnet Fe$_3$GaTe$_2$ |
| topic | Materials Science |
| url | https://arxiv.org/abs/2403.09846 |