Quantum and Thermal Transitions Out of the Supersolid Phase of a 2D Quantum Antiferromagnet

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.


Published in:
Physical Review Letters, 99, 2, 027202
Year:
2007
Laboratories:


Note: The status of this file is: Anyone


 Record created 2019-06-24, last modified 2020-04-20

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