Sub-domain structure in a single crystal of the magnetic topological insulator MnSb2Te4
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866917209406701568 |
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| author | Tyutvinov, V. A. Sidelnikov, M. S. Abdullayev, N. A. Aliev, Z. S. Amiraslanov, I. R. Mamedov, N. T. Zverev, V. N. Vinnikov, L. Ya. |
| author_facet | Tyutvinov, V. A. Sidelnikov, M. S. Abdullayev, N. A. Aliev, Z. S. Amiraslanov, I. R. Mamedov, N. T. Zverev, V. N. Vinnikov, L. Ya. |
| contents | The domain structure of a MnSb$_2$Te$_4$ single crystal with a Curie temperature $T_C \approx 45~K$ was studied using the high-resolution Bitter decoration technique. Magnetotransport measurements confirm a soft ferromagnetic ordering with a coercive field of $ \sim 100$ Oe. We revealed the formation of a hierarchical domain structure characterized by two distinct spatial scales. These results indicate the existence of two magnetically weakly coupled subsystems -- surface and bulk. The observed sub-domain structure can be attributed to the formation of a ferromagnetic well due to an inhomogeneous distribution of $\mathrm{Mn_{Sb}}$ antisite defects, with an additional contribution from symmetry breaking in the near-surface layer. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_12399 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Sub-domain structure in a single crystal of the magnetic topological insulator MnSb2Te4 Tyutvinov, V. A. Sidelnikov, M. S. Abdullayev, N. A. Aliev, Z. S. Amiraslanov, I. R. Mamedov, N. T. Zverev, V. N. Vinnikov, L. Ya. Materials Science Other Condensed Matter The domain structure of a MnSb$_2$Te$_4$ single crystal with a Curie temperature $T_C \approx 45~K$ was studied using the high-resolution Bitter decoration technique. Magnetotransport measurements confirm a soft ferromagnetic ordering with a coercive field of $ \sim 100$ Oe. We revealed the formation of a hierarchical domain structure characterized by two distinct spatial scales. These results indicate the existence of two magnetically weakly coupled subsystems -- surface and bulk. The observed sub-domain structure can be attributed to the formation of a ferromagnetic well due to an inhomogeneous distribution of $\mathrm{Mn_{Sb}}$ antisite defects, with an additional contribution from symmetry breaking in the near-surface layer. |
| title | Sub-domain structure in a single crystal of the magnetic topological insulator MnSb2Te4 |
| topic | Materials Science Other Condensed Matter |
| url | https://arxiv.org/abs/2601.12399 |