Absence of zero-point entropy in a triangular Ising antiferromagnet.

@inproceedings{Li2018AbsenceOZ,
  title={Absence of zero-point entropy in a triangular Ising antiferromagnet.},
  author={Yuesheng Li and S. Bachus and Yoshifumi Tokiwa and Alexander A. Tsirlin and Philipp Gegenwart},
  year={2018}
}
Frustrated Ising magnets host exotic excitations, such as magnetic monopoles in spin ice. The ground state (GS) in this case is characterized by an extensive degeneracy and associated residual entropy going back to the pioneering work by G. Wannier who established large residual entropy of nearly 50%Rln2 per mole spins in a triangular Ising antiferromagnet (TIAF) already in 1950. Here, we endeavor to verify this result experimentally using TmMgGaO4, a novel rare-earth-based frustrated… 
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