From hierarchical triangular spin liquid to multi-$q$ spin texture in spinel GeFe$_2$O$_4$
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918005075607552 |
|---|---|
| author | Chaix, L. Robert, J. Chan, E. Ressouche, E. Petit, S. Colin, C. V. Ballou, R. Ollivier, J. Regnault, L. -P. Lhotel, E. Cathelin, V. Lenne, S. Cavanel, C. Damay, F. Suard, E. Strobel, P. Darie, C. deBrion, S. Simonet, V. |
| author_facet | Chaix, L. Robert, J. Chan, E. Ressouche, E. Petit, S. Colin, C. V. Ballou, R. Ollivier, J. Regnault, L. -P. Lhotel, E. Cathelin, V. Lenne, S. Cavanel, C. Damay, F. Suard, E. Strobel, P. Darie, C. deBrion, S. Simonet, V. |
| contents | Combining macroscopic measurements, neutron scattering and modeling, we identify in the GeFe$_2$O$_4$ spinel a correlated paramagnetic state resulting from the predominance of third-neighbor antiferromagnetic interactions. These interactions materialize 4 isolated families of triangular planes with 120$^{\circ}$ spins emerging from the underlying pyrochlore lattice. At lower temperatures, a phase transition occurs from this hierarchical spin liquid to a non-coplanar spin texture that is characterized by 6 propagating vectors. This unusual multi-$q$ order is triggered by the presence of weaker interactions up to the sixth neighbors. The system is remarkably successful in coupling the different triangular planes while maintaining their two-dimensional 120$^{\circ}$ order. Our study highlights the hierarchy of interactions involved in GeFe$_2$O$_4$, which is singular among spinel compounds since first-neighbor interactions are only a small fraction of the dominant third neighbor ones. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_21142 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | From hierarchical triangular spin liquid to multi-$q$ spin texture in spinel GeFe$_2$O$_4$ Chaix, L. Robert, J. Chan, E. Ressouche, E. Petit, S. Colin, C. V. Ballou, R. Ollivier, J. Regnault, L. -P. Lhotel, E. Cathelin, V. Lenne, S. Cavanel, C. Damay, F. Suard, E. Strobel, P. Darie, C. deBrion, S. Simonet, V. Strongly Correlated Electrons Combining macroscopic measurements, neutron scattering and modeling, we identify in the GeFe$_2$O$_4$ spinel a correlated paramagnetic state resulting from the predominance of third-neighbor antiferromagnetic interactions. These interactions materialize 4 isolated families of triangular planes with 120$^{\circ}$ spins emerging from the underlying pyrochlore lattice. At lower temperatures, a phase transition occurs from this hierarchical spin liquid to a non-coplanar spin texture that is characterized by 6 propagating vectors. This unusual multi-$q$ order is triggered by the presence of weaker interactions up to the sixth neighbors. The system is remarkably successful in coupling the different triangular planes while maintaining their two-dimensional 120$^{\circ}$ order. Our study highlights the hierarchy of interactions involved in GeFe$_2$O$_4$, which is singular among spinel compounds since first-neighbor interactions are only a small fraction of the dominant third neighbor ones. |
| title | From hierarchical triangular spin liquid to multi-$q$ spin texture in spinel GeFe$_2$O$_4$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2504.21142 |