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

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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.
To appear in Phys. Rev. Lett

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/133101

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0702249
 http://arxiv.org/abs/cond-mat/0702249
 Phys. Rev. Lett. 99, 027202 (2007)
 doi:10.1103/PhysRevLett.99.027202

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