Influence of the magneto-volume effect on the transient reflectivity of MnSi
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866914792637202432 |
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| author | Kalin, J. Sievers, S. Füser, H. Bauer, A. Pfleiderer, C. Schumacher, H. W. Bieler, M. |
| author_facet | Kalin, J. Sievers, S. Füser, H. Bauer, A. Pfleiderer, C. Schumacher, H. W. Bieler, M. |
| contents | The magneto-volume effect is a well-established yet frequently overlooked phenomenon in magnetic materials that may affect a wide range of physical properties. Our study explores the influence of the magneto-volume effect on the transient reflectivity of MnSi, a well-known chiral magnet with strong magnetoelastic coupling. We observe a unipolar reflectivity transient in the paramagnetic phase, contrasting with a bipolar response in phases with magnetic long-range order. Comparing our findings with thermal expansion from literature, we establish that the bipolar response originates in the magneto-volume effect which dominates the thermal expansion and influences the optical reflectivity. Our results highlight not only that the magneto-volume effect must be considered when discussing transient reflectivity measurements of magnetic materials but also that such measurements permit to study the characteristic time scales of the magneto-volume effect itself, contributing to a deeper understanding of this often-neglected phenomenon. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_02174 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Influence of the magneto-volume effect on the transient reflectivity of MnSi Kalin, J. Sievers, S. Füser, H. Bauer, A. Pfleiderer, C. Schumacher, H. W. Bieler, M. Mesoscale and Nanoscale Physics The magneto-volume effect is a well-established yet frequently overlooked phenomenon in magnetic materials that may affect a wide range of physical properties. Our study explores the influence of the magneto-volume effect on the transient reflectivity of MnSi, a well-known chiral magnet with strong magnetoelastic coupling. We observe a unipolar reflectivity transient in the paramagnetic phase, contrasting with a bipolar response in phases with magnetic long-range order. Comparing our findings with thermal expansion from literature, we establish that the bipolar response originates in the magneto-volume effect which dominates the thermal expansion and influences the optical reflectivity. Our results highlight not only that the magneto-volume effect must be considered when discussing transient reflectivity measurements of magnetic materials but also that such measurements permit to study the characteristic time scales of the magneto-volume effect itself, contributing to a deeper understanding of this often-neglected phenomenon. |
| title | Influence of the magneto-volume effect on the transient reflectivity of MnSi |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2402.02174 |