Easy-cone state mediating the spin reorientation in topological kagome magnet Fe$_3$Sn$_2$
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2025
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866915139774578688 |
|---|---|
| author | Prodan, L. Evans, D. M. Sukhanov, A. S. Nikitin, S. E. Tsirlin, A. A. Puntingam, L. Rahn, M. C. Chioncel, L. Tsurkan, V. Kezsmarki, I. |
| author_facet | Prodan, L. Evans, D. M. Sukhanov, A. S. Nikitin, S. E. Tsirlin, A. A. Puntingam, L. Rahn, M. C. Chioncel, L. Tsurkan, V. Kezsmarki, I. |
| contents | We investigated temperature-driven spin reorientation (SR) in the itinerant kagome magnet Fe$_3$Sn$_2$ using high-resolution synchrotron x-ray diffraction, neutron diffraction, magnetometry, and magnetic force microscopy (MFM), further supported by phenomenological analysis. Our study reveals a crossover from the state with easy-plane anisotropy to the high-temperature state with uniaxial easy-axis anisotropy taking place between $\sim40-130$~ K through an intermediate easy-cone (or tilted spin) state. This state, induced by the interplay between the anisotropy constants $K_1$ and $K_2$, is clearly manifested in the thermal evolution of the magnetic structure factor, which reveals a gradual change of the SR angle $\mathbfθ$ between $40-130$~K. We also found that the SR is accompanied by a magnetoelastic effect. Zero-field MFM images across the SR range show a transformation in surface magnetic patterns from a dendritic structure at 120~K, to domain wall dominated MFM contrast at 40~K. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_03239 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Easy-cone state mediating the spin reorientation in topological kagome magnet Fe$_3$Sn$_2$ Prodan, L. Evans, D. M. Sukhanov, A. S. Nikitin, S. E. Tsirlin, A. A. Puntingam, L. Rahn, M. C. Chioncel, L. Tsurkan, V. Kezsmarki, I. Materials Science Strongly Correlated Electrons We investigated temperature-driven spin reorientation (SR) in the itinerant kagome magnet Fe$_3$Sn$_2$ using high-resolution synchrotron x-ray diffraction, neutron diffraction, magnetometry, and magnetic force microscopy (MFM), further supported by phenomenological analysis. Our study reveals a crossover from the state with easy-plane anisotropy to the high-temperature state with uniaxial easy-axis anisotropy taking place between $\sim40-130$~ K through an intermediate easy-cone (or tilted spin) state. This state, induced by the interplay between the anisotropy constants $K_1$ and $K_2$, is clearly manifested in the thermal evolution of the magnetic structure factor, which reveals a gradual change of the SR angle $\mathbfθ$ between $40-130$~K. We also found that the SR is accompanied by a magnetoelastic effect. Zero-field MFM images across the SR range show a transformation in surface magnetic patterns from a dendritic structure at 120~K, to domain wall dominated MFM contrast at 40~K. |
| title | Easy-cone state mediating the spin reorientation in topological kagome magnet Fe$_3$Sn$_2$ |
| topic | Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2502.03239 |