Possibility of Potts Spin-Ice in Rare Earth Twisted-Kagome Layers: an Example of DyAgGe

@misc{schwertfeger2026possibility,
  title = {{Possibility of Potts Spin-Ice in Rare Earth Twisted-Kagome Layers: an Example of DyAgGe}},
  author = {Gunnar F. Schwertfeger and Po-Hao Chang and Predrag Nikolic and Igor I. Mazin and Hari Bhandari and Nirmal J. Ghimire},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.03842},
  eprint = {2611.03842},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.03842},
}

TY  - UNPB
TI  - Possibility of Potts Spin-Ice in Rare Earth Twisted-Kagome Layers: an Example of DyAgGe
AU  - Gunnar F. Schwertfeger
AU  - Po-Hao Chang
AU  - Predrag Nikolic
AU  - Igor I. Mazin
AU  - Hari Bhandari
AU  - Nirmal J. Ghimire
PY  - 2026
DA  - 2026/11/02
PB  - arXiv
DO  - 10.48550/arxiv.2611.03842
UR  - https://arxiv.org/abs/2611.03842
AB  - Three-dimensional (3D) spin-ice compounds, predominantly based on the pyrochlore or spinel structure, have been attracting considerable interest in the last two decades. A two-dimensional (2D) analogue is the spin-ice consisting of kagome planes. So far, only Ising spin ice has been discovered in any material, and only one 2D material, the kagome compound HoAgGe, has been identified as a spin ice. In this Letter, we show that another rare-earth twisted Kagome magnetic compound, DyAgGe, is in fact a Potts spin ice (or color ice), where at each site not two but four spin directions are allowed. We argue that an 8-state spin ice may also exist in this class of systems. We present a first-principles calculation of magnetic interactions in DyAgGe, and confirm the 4-state Potts structure of this material by matching our model predictions with the available experimental data.
ER  -