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Quantum and thermal transitions out of the supersolid phase of a 2D quantum antiferromagnet

Nicolas Laflorencie·Frederic Mila
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Abstract

We investigate the thermodynamic properties of a field-induced supersolid phase in a 2D quantum antiferromagnet model. Using quantum Monte Carlo simulations, a very rich phase diagram is mapped out in the temperature - magnetic field plane, with an extended supersolid region where a diagonal (solid) order coexists with a finite XY spin stiffness (superfluid). The various quantum and thermal transitions out of the supersolid state are characterized. Experimental consequences in the context of field-induced magnetization plateau materials are briefly discussed.

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Nicolas Laflorencie, Frederic Mila. 2007-06-05. Quantum and thermal transitions out of the supersolid phase of a 2D quantum antiferromagnet. https://doi.org/10.1103/physrevlett.99.027202

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