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Finite temperature properties of a supersolid: a RPA approach

Stoffel, Andre; Gulacsi, Miklos

Description

We study in random-phase approximation the newly discovered supersolid phase of 4He and present in detail its finite temperature properties. 4He is described within a hard-core quantum lattice gas model, with nearest and next-nearest neighbour interactions taken into account. We rigorously calculate all pair correlation functions in a cumulant decoupling scheme. Our results support the importance of the vacancies in the supersolid phase. We show that in a supersolid the net vacancy density...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
URI: http://hdl.handle.net/1885/31626
Source: European Physical Journal B
DOI: 10.1140/epjb/e2009-00018-6

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