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arXiv · 1004.0806

Quasiequilibrium supersolid phase of a two-dimensional dipolar crystal

I. L. Kurbakov·Yu. E. Lozovik·G. E. Astrakharchik·J. Boronat
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Abstract

We have studied the possible existence of a supersolid phase of a two-dimensional dipolar crystal using quantum Monte Carlo methods at zero temperature. Our results show that the commensurate solid is not a supersolid in the thermodynamic limit. The presence of vacancies or interstitials turns the solid into a supersolid phase even when a tiny fraction of them are present in a macroscopic system. The effective interaction between vacancies is repulsive making a quasiequilibrium dipolar supersolid possible.

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I. L. Kurbakov, Yu. E. Lozovik, G. E. Astrakharchik, J. Boronat. 2010-04-06. Quasiequilibrium supersolid phase of a two-dimensional dipolar crystal. https://doi.org/10.1103/physrevb.82.014508

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