Contrasting magnetic behavior in MnSc_2X_4 (X = S, Se) spinel compounds investigated by magnetoelastic studies
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866911311363833856 |
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| author | Grumbach, J. Sourd, J. Deeb, M. Miyata, A. Suwa, H. Gottschall, T. Hauspurg, A. Chattopadhyay, S. Rotter, M. Granovsky, S. Prodan, L. Tsurkan, V. Zherlitsyn, S. Doerr, M. Wosnitza, J. |
| author_facet | Grumbach, J. Sourd, J. Deeb, M. Miyata, A. Suwa, H. Gottschall, T. Hauspurg, A. Chattopadhyay, S. Rotter, M. Granovsky, S. Prodan, L. Tsurkan, V. Zherlitsyn, S. Doerr, M. Wosnitza, J. |
| contents | The spinel compounds MnSc_2X_4 are highly frustrated and candidate materials for vortex-like 3q magnetic states, such as skyrmions, with propagation vectors in the [111] plane. Because of the strong magnetoelastic coupling, we could extract a refined magnetic (H, T) phase diagram for MnSc_2S_4 from ultrasound and dilatometry measurements. We found a variety of magnetic phases, including the skyrmion phase, which is stable down to lowest temperatures. In comparison, we investigated MnSc_2Se_4 , having a larger distance between the magnetic Mn^3+ ions using the same methods. Unlike in MnSc_2S_4 , we found no skyrmion phase and overall a lack of sharp anomalies indicative of phase transitions, neither in dilatometry nor ultrasound nor in specific heat and ac-susceptibility data. Motivated by our findings, we performed model calculations, which reproduced the experimentally observed magnetostriction and specific-heat results reasonably well. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_09698 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Contrasting magnetic behavior in MnSc_2X_4 (X = S, Se) spinel compounds investigated by magnetoelastic studies Grumbach, J. Sourd, J. Deeb, M. Miyata, A. Suwa, H. Gottschall, T. Hauspurg, A. Chattopadhyay, S. Rotter, M. Granovsky, S. Prodan, L. Tsurkan, V. Zherlitsyn, S. Doerr, M. Wosnitza, J. Strongly Correlated Electrons The spinel compounds MnSc_2X_4 are highly frustrated and candidate materials for vortex-like 3q magnetic states, such as skyrmions, with propagation vectors in the [111] plane. Because of the strong magnetoelastic coupling, we could extract a refined magnetic (H, T) phase diagram for MnSc_2S_4 from ultrasound and dilatometry measurements. We found a variety of magnetic phases, including the skyrmion phase, which is stable down to lowest temperatures. In comparison, we investigated MnSc_2Se_4 , having a larger distance between the magnetic Mn^3+ ions using the same methods. Unlike in MnSc_2S_4 , we found no skyrmion phase and overall a lack of sharp anomalies indicative of phase transitions, neither in dilatometry nor ultrasound nor in specific heat and ac-susceptibility data. Motivated by our findings, we performed model calculations, which reproduced the experimentally observed magnetostriction and specific-heat results reasonably well. |
| title | Contrasting magnetic behavior in MnSc_2X_4 (X = S, Se) spinel compounds investigated by magnetoelastic studies |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2512.09698 |