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- Title
Supersolidity and the Thermodynamics of Solid Helium.
- Authors
Humphrey Maris; Sébastien Balibar
- Abstract
The specific heat of solid helium in the temperature range below about 1.2 K has been found to contain a term varying as T 7, in addition to the usual T 3 contribution always found in a crystalline dielectric solid. It has been proposed by Anderson, Brinkman and Huse, (Science 310, 1164 (2005)) that the existence of this T 7 term supports their theory of supersolidity. However, in this paper we show that corrections to the phonon specific heat arising from phonon dispersion are much larger than expected based on simple order of magnitude estimates and, as a consequence, it is very unlikely that the existence of this T 7 term can be considered as evidence for supersolidity.
- Subjects
HELIUM at low temperatures; LOW temperatures; SOLID rare gases; NOBLE gases
- Publication
Journal of Low Temperature Physics, 2007, Vol 147, Issue 5/6, p539
- ISSN
0022-2291
- Publication type
Article
- DOI
10.1007/s10909-007-9347-4