Approaching Kasteleyn transition in frustrated quantum Heisenberg antiferromagnets
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915742455169024 |
|---|---|
| author | Karlova, Katarina Rufino, Afonso Verkholyak, Taras Caci, Nils Wessel, Stefan Strecka, Jozef Mila, Frederic Honecker, Andreas |
| author_facet | Karlova, Katarina Rufino, Afonso Verkholyak, Taras Caci, Nils Wessel, Stefan Strecka, Jozef Mila, Frederic Honecker, Andreas |
| contents | We show that the Kasteleyn transition, the abrupt proliferation of infinite strings of defects in classical dimer and related models, can also be relevant for frustrated 2d quantum magnets. This is explicitly demonstrated in a phase of the spin-1/2 Heisenberg diamond-decorated honeycomb lattice where a family of exact eigenstates built as products of dimer and plaquette singlets can be mapped onto the dimer coverings of the honeycomb lattice. The low-temperature properties of this phase are accurately described by an effective dimer model with anisotropic activities and a small, tunable density of monomers, leading to an arbitrarily sharp crossover version of the Kasteleyn transition. The generalization to other geometries and the possibility to realize this model in organo-metallic compounds are briefly discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_14382 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Approaching Kasteleyn transition in frustrated quantum Heisenberg antiferromagnets Karlova, Katarina Rufino, Afonso Verkholyak, Taras Caci, Nils Wessel, Stefan Strecka, Jozef Mila, Frederic Honecker, Andreas Statistical Mechanics Strongly Correlated Electrons We show that the Kasteleyn transition, the abrupt proliferation of infinite strings of defects in classical dimer and related models, can also be relevant for frustrated 2d quantum magnets. This is explicitly demonstrated in a phase of the spin-1/2 Heisenberg diamond-decorated honeycomb lattice where a family of exact eigenstates built as products of dimer and plaquette singlets can be mapped onto the dimer coverings of the honeycomb lattice. The low-temperature properties of this phase are accurately described by an effective dimer model with anisotropic activities and a small, tunable density of monomers, leading to an arbitrarily sharp crossover version of the Kasteleyn transition. The generalization to other geometries and the possibility to realize this model in organo-metallic compounds are briefly discussed. |
| title | Approaching Kasteleyn transition in frustrated quantum Heisenberg antiferromagnets |
| topic | Statistical Mechanics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2601.14382 |