Spin and lattice dynamics of a van der Waals antiferromagnet MnPSe$_3$
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909219710566400 |
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| author | Liao, Junbo Huang, Zhentao Shangguan, Yanyan Zhang, Bo Cheng, Shufan Xu, Hao Kajimoto, Ryoichi Kamazawa, Kazuya Bao, Song Wen, Jinsheng |
| author_facet | Liao, Junbo Huang, Zhentao Shangguan, Yanyan Zhang, Bo Cheng, Shufan Xu, Hao Kajimoto, Ryoichi Kamazawa, Kazuya Bao, Song Wen, Jinsheng |
| contents | Antiferromagnetic van der Waals family $\rm \textit{M}P\textit{X}_{3}\ (M=Fe,\ Mn,\ Co,\text{ and}\ Ni; X=S\text{ and}\ Se)$ have attracted significant research attention due to the possibility of realizing long-range magnetic order down to the monolayer limit. Here, we perform inelastic neutron scattering measurements on single crystal samples of MnPSe$_3$, a member of the $\rm \textit{M}P\textit{X}_{3}$ family, to study the spin dynamics and determine the effective spin model. The excited magnon bands are well characterized by a spin model, which includes a Heisenberg term with three intraplane exchange parameters ($J_{1}=-0.73$~meV, $J_{2}=-0.014$~meV, $J_{3}=-0.43$~meV) and one interplane parameter ($J_{c}=-0.054$~meV), and an easy-plane single-ion anisotropy term ($D=-0.035$~meV). Additionally, we observe the intersection of the magnon and phonon bands but no anomalous spectral features induced by the formation of magnon-phonon hybrid excitations at the intersecting region. We discuss possible reasons for the absence of such hybrid excitations in MnPSe$_3$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2406_05319 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Spin and lattice dynamics of a van der Waals antiferromagnet MnPSe$_3$ Liao, Junbo Huang, Zhentao Shangguan, Yanyan Zhang, Bo Cheng, Shufan Xu, Hao Kajimoto, Ryoichi Kamazawa, Kazuya Bao, Song Wen, Jinsheng Strongly Correlated Electrons Materials Science Antiferromagnetic van der Waals family $\rm \textit{M}P\textit{X}_{3}\ (M=Fe,\ Mn,\ Co,\text{ and}\ Ni; X=S\text{ and}\ Se)$ have attracted significant research attention due to the possibility of realizing long-range magnetic order down to the monolayer limit. Here, we perform inelastic neutron scattering measurements on single crystal samples of MnPSe$_3$, a member of the $\rm \textit{M}P\textit{X}_{3}$ family, to study the spin dynamics and determine the effective spin model. The excited magnon bands are well characterized by a spin model, which includes a Heisenberg term with three intraplane exchange parameters ($J_{1}=-0.73$~meV, $J_{2}=-0.014$~meV, $J_{3}=-0.43$~meV) and one interplane parameter ($J_{c}=-0.054$~meV), and an easy-plane single-ion anisotropy term ($D=-0.035$~meV). Additionally, we observe the intersection of the magnon and phonon bands but no anomalous spectral features induced by the formation of magnon-phonon hybrid excitations at the intersecting region. We discuss possible reasons for the absence of such hybrid excitations in MnPSe$_3$. |
| title | Spin and lattice dynamics of a van der Waals antiferromagnet MnPSe$_3$ |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2406.05319 |