Elastic properties and thermodynamic anomalies of supersolids
File(s)PhysRevResearch.6.043040.pdf (1.14 MB)
Published version
Author(s)
Rakic, M
Ho, A
Lee, D
Type
Journal Article
Abstract
We study a supersolid in the context of a Gross-Pitaevskii theory with a non-local effective potential. We employ a homogenisation technique which allows us to calculate the elastic moduli, supersolid fraction and other state variables of the system. Our methodology is verified against numerical simulations of elastic deformations. We can also verify that the long-wavelength Goldstone modes that emerge from this technique agree with Bogoliubov theory. We find a thermodynamic anomaly that the supersolid does not obey the thermodynamic relation 𝜕𝑃/𝜕𝑉|𝑁=−𝑛(𝜕𝑃/𝜕𝑁|𝑉), which we claim is a feature unique to supersolids.
Date Issued
2024-10
Date Acceptance
2024-09-12
ISSN
2643-1564
Publisher
American Physical Society
Journal / Book Title
Physical Review Research
Volume
6
Issue
4
Copyright Statement
Published by the American Physical Society under the terms of the
Creative Commons Attribution 4.0 International license. Further
distribution of this work must maintain attribution to the author(s)
and the published article’s title, journal citation, and DOI.
Creative Commons Attribution 4.0 International license. Further
distribution of this work must maintain attribution to the author(s)
and the published article’s title, journal citation, and DOI.
Identifier
https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.6.043040
Publication Status
Published
Article Number
043040
Date Publish Online
2024-10-16