Magnon-phonon interactions in the spinel compound MnSc$_2$Se$_4$
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866929563110473728 |
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| author | Sourd, J. Skourski, Y. Prodan, L. Tsurkan, V. Miyata, A. Wosnitza, J. Zherlitsyn, S. |
| author_facet | Sourd, J. Skourski, Y. Prodan, L. Tsurkan, V. Miyata, A. Wosnitza, J. Zherlitsyn, S. |
| contents | We investigated the magnetic and magnetoelastic properties of MnSc$_2$Se$_4$ single crystals at low temperature under a magnetic field directed along the crystallographic [111] axis. The magnetization data at low temperature show a linear increase with magnetic field, until saturation is reached above 15 T. In ultrasound, a longitudinal acoustic mode shows a softening in field, which is absent for a transverse acoustic mode. We discuss these results using a microscopic model based on the framework of linear spin-wave theory. The magnetic and magnetoelastic data are qualitatively reproduced by considering magnon-phonon interactions arising from exchange-striction coupling between the crystal lattice and spin-wave fluctuations in the zero-temperature limit. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_20948 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Magnon-phonon interactions in the spinel compound MnSc$_2$Se$_4$ Sourd, J. Skourski, Y. Prodan, L. Tsurkan, V. Miyata, A. Wosnitza, J. Zherlitsyn, S. Strongly Correlated Electrons We investigated the magnetic and magnetoelastic properties of MnSc$_2$Se$_4$ single crystals at low temperature under a magnetic field directed along the crystallographic [111] axis. The magnetization data at low temperature show a linear increase with magnetic field, until saturation is reached above 15 T. In ultrasound, a longitudinal acoustic mode shows a softening in field, which is absent for a transverse acoustic mode. We discuss these results using a microscopic model based on the framework of linear spin-wave theory. The magnetic and magnetoelastic data are qualitatively reproduced by considering magnon-phonon interactions arising from exchange-striction coupling between the crystal lattice and spin-wave fluctuations in the zero-temperature limit. |
| title | Magnon-phonon interactions in the spinel compound MnSc$_2$Se$_4$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2410.20948 |