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Type: Artigo de periódico
Title: Elastic Anomalies of Crystalline He-4 at T=0
Author: Pessoa, R
de Koning, M
Vitiello, SA
Abstract: Elastic constants for hcp He-4 are investigated at zero temperature, from close to the melting pressure up to 14 MPa approximately. Well known relations of these quantities are used to analyze the results. A reliable model wave function is used in the calculations. We show that the linear compressibility has a non-isotropic character in a range of densities rather than the expected isotropic behavior. A fact that suggests that the relation among elastic constants that depends on a constant value of the structure parameters ratio c/a for hcp quantum crystals should not be used to extract an elastic constant from experimental data.
Subject: Solid helium
Elastic constants
Elastic constants relations
Country: EUA
Editor: Springer/plenum Publishers
Citation: Journal Of Low Temperature Physics. Springer/plenum Publishers, v. 173, n. 41732, n. 143, n. 151, 2013.
Rights: fechado
Identifier DOI: 10.1007/s10909-013-0886-6
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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