Exchange-induced crystallization of soft-core bosons

20Citations
Citations of this article
19Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

We study the phase diagram of a two-dimensional assembly of bosons interacting via a soft-core repulsive pair potential of varying strength, and compare it to that of the equivalent system in which particles are regarded as distinguishable. We show that quantum-mechanical exchanges stabilize a 'cluster crystal' phase in a wider region of parameter space than predicted by calculations in which exchanges are neglected. This physical effect is diametrically opposite to that which takes place in hard-core Bose systems such as 4He, wherein exchanges strengthen the fluid phase. This is underlain in the cluster crystal phase of soft-core bosons by the free energy gain associated with the formation of local Bose-Einstein condensates. © 2014 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.

Cite

CITATION STYLE

APA

Cinti, F., Boninsegni, M., & Pohl, T. (2014). Exchange-induced crystallization of soft-core bosons. New Journal of Physics, 16. https://doi.org/10.1088/1367-2630/16/3/033038

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free