In the Ising-like triangular antiferromagnet Er7TaO12, long-range magnetic order forms on cooling then melts into short-range correlations at lower temperature, realizing a spin analog of the Pomeranchuk effect.
Broholm,et al., Quantum spin liquids.Science367(6475), eaay0668 (2020)
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K2Co2(TeO3)3·2.5H2O is a new zemannite-type antiferromagnet with long-range AFM order below 7.6 K whose planar ordering is stabilized by antiferromagnetic interactions through tellurite bridges rather than the usual ferromagnetic or negligible dimer couplings.
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Melting upon cooling in a quantum magnet
In the Ising-like triangular antiferromagnet Er7TaO12, long-range magnetic order forms on cooling then melts into short-range correlations at lower temperature, realizing a spin analog of the Pomeranchuk effect.
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K$_2$Co$_2$(TeO$_{3}$)$_{3}$ $\cdot$ 2.5 H$_2$O : A mineral-inspired pseudo-honeycomb cobalt dimer antiferromagnet
K2Co2(TeO3)3·2.5H2O is a new zemannite-type antiferromagnet with long-range AFM order below 7.6 K whose planar ordering is stabilized by antiferromagnetic interactions through tellurite bridges rather than the usual ferromagnetic or negligible dimer couplings.