A frustrated antipolar phase analogous to classical spin liquids
Abstract
The study of magnetic frustration in classical spin systems was motivated by the prediction and discovery of classical spin liquid states. These uncommon magnetic phases are characterized by a massive degeneracy of their ground state implying a finite magnetic entropy at zero temperature. While the classical spin liquid state was originally predicted in the Ising triangular lattice antiferromagnet in 1950, this state has never been experimentally observed in any triangular magnets. We report here the discovery of an electric analogue of classical spin liquids on a triangular lattice of uniaxial electric dipoles in EuAl12O19 . This new type of frustrated antipolar phase is characterized by a highly degenerate state at low temperature implying an absence of long-range antiferroelectric order, despite short-range antipolar correlations. Its dynamics are governed by a thermally activated process, slowing down upon cooling towards a complete freezing at zero temperature.
Keywords
Cite
@article{arxiv.2405.19859,
title = {A frustrated antipolar phase analogous to classical spin liquids},
author = {G. Bastien and D. Repček and A. Eliáš and A. Kancko and Q. Courtade and T. Haidamak and M. Savinov and V. Bovtun and M. Kempa and K. Carva and M. Vališka and P. Doležal and M. Kratochvílová and S. A. Barnett and P. Proschek and J. Prokleška and C. Kadlec and P. Kužel and R. H. Colman and S. Kamba},
journal= {arXiv preprint arXiv:2405.19859},
year = {2024}
}