Many have reported evidence for a quantum spin liquid state — in which quantum fluctuations prevent spin order — but thermodynamic evidence has been lacking, until now. Although it points the way, is it enough?
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Ramirez, A. A flood or a trickle?. Nature Phys 4, 442–443 (2008). https://doi.org/10.1038/nphys978
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DOI: https://doi.org/10.1038/nphys978
