Exchange striction induced thermal Hall effect in van der Waals antiferromagnet MnPS$_3$
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866917823141380096 |
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| author | Yang, Heejun Go, Gyungchoon Park, Jaena Kim, Se Kwon Park, Je-Geun |
| author_facet | Yang, Heejun Go, Gyungchoon Park, Jaena Kim, Se Kwon Park, Je-Geun |
| contents | The thermal Hall effect has emerged as an ideal probe for investigating topological phenomena of charge-neutral excitation. Notably, it reveals crucial aspects of spin-lattice couplings that have been difficult to access for decades. However, the exchange striction mechanism from a lattice-induced change in exchange interaction has often been ignored in thermal Hall experiments. MnPS3 can offer a platform to study exchange striction on the thermal Hall effect due to its significant spin-lattice coupling and field-induced non-collinear spin configuration. Our thermal transport data show distinct temperature and field dependence of longitudinal thermal conductivity ($κ_{xx}$) and thermal Hall effect ($κ_{xy}$). By using detailed theoretical calculation, we found that the inclusion of the exchange striction is essential for a better description of both $κ_{xx}$ and $κ_{xy}$. Our result demonstrates the importance of the exchange striction mechanism for a complete understanding of the magnon-phonon-driven thermal Hall effect. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_03088 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Exchange striction induced thermal Hall effect in van der Waals antiferromagnet MnPS$_3$ Yang, Heejun Go, Gyungchoon Park, Jaena Kim, Se Kwon Park, Je-Geun Strongly Correlated Electrons Materials Science Other Condensed Matter The thermal Hall effect has emerged as an ideal probe for investigating topological phenomena of charge-neutral excitation. Notably, it reveals crucial aspects of spin-lattice couplings that have been difficult to access for decades. However, the exchange striction mechanism from a lattice-induced change in exchange interaction has often been ignored in thermal Hall experiments. MnPS3 can offer a platform to study exchange striction on the thermal Hall effect due to its significant spin-lattice coupling and field-induced non-collinear spin configuration. Our thermal transport data show distinct temperature and field dependence of longitudinal thermal conductivity ($κ_{xx}$) and thermal Hall effect ($κ_{xy}$). By using detailed theoretical calculation, we found that the inclusion of the exchange striction is essential for a better description of both $κ_{xx}$ and $κ_{xy}$. Our result demonstrates the importance of the exchange striction mechanism for a complete understanding of the magnon-phonon-driven thermal Hall effect. |
| title | Exchange striction induced thermal Hall effect in van der Waals antiferromagnet MnPS$_3$ |
| topic | Strongly Correlated Electrons Materials Science Other Condensed Matter |
| url | https://arxiv.org/abs/2410.03088 |