Dipolar Aleppo lattice: Ground state ordering and ergodic dynamics in the absence of vertex frustration
We introduce the Aleppo spin ice geometry, another variation of decimated square ice patterns, which in contrast to similar systems previously studied, does not exhibit vertex frustration. Using synchrotron-based photoemission electron microscopy, we directly visualize low-energy states achieved after thermal annealing, in addition to temperature-dependent moment fluctuations. The results reveal the observation of ground state patterns and the absence of ergodicity-breaking dynamics. Our observations further confirm vertex frustration to be an important criterion for the emergence of ergodicity transitions.
Authors
- Duncan Miertschin (ORCID: https://orcid.org/0000-0001-6562-3768)
- Francesco Caravelli (ORCID: https://orcid.org/0000-0001-7964-3030)
- Kevin Hofhuis (ORCID: https://orcid.org/0000-0002-1642-4786)
- Alan Farhan (ORCID: https://orcid.org/0000-0002-2384-2249)
- Balaram Regmi (ORCID: https://orcid.org/0000-0002-0267-4864)
- Scott Dhuey (ORCID: https://orcid.org/0000-0002-9185-2510)
- Christian Hoyt (ORCID: https://orcid.org/0009-0000-2981-5260)
- Davis Crater (ORCID: https://orcid.org/0009-0001-6893-3822)
- Barat Achinuq
- Gopi Mahato
Institutions
- Los Alamos National Laboratory (US)
- Lawrence Berkeley National Laboratory (US)
- Baylor University (US)
- Paul Scherrer Institute (CH)
- Foundry (United Kingdom) (GB)
- Molecular Foundry
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2025-04-08
- DOI
- https://doi.org/10.1103/physrevb.111.144407
- Citations
- 1
- Primary Topic
- Theoretical and Computational Physics
- Type
- article
- Field-Weighted Citation Impact
- 1.26
Funders
- U.S. Department of Energy
- Los Alamos National Laboratory