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Type: Artigo de periódico
Title: Effects of a He-3 impurity on the Elastic Anomalies of He-4 at T=0
Author: Pessoa, R
Vitiello, SA
Abstract: Effects on the elastic constants of a system formed from He-4 atoms with a He-3 impurity concentration of 0.14 % are investigated in a range of densities varying from 0.029 to 0.035 (-3). A model wave function of the shadow class is used to compute elastic constants and quantities defined through relations satisfied by them. The linear compressibility assumes the isotropic character expected for an hcp crystal with a constant value of the structure axis ratio c/a. This is in contrast with bulk He-4 where an anisotropic behavior is observed.
Subject: Elastic constants
He-3 impurities
Country: EUA
Editor: Springer/plenum Publishers
Citation: Journal Of Low Temperature Physics. Springer/plenum Publishers, v. 171, n. 41732, n. 315, n. 321, 2013.
Rights: fechado
Identifier DOI: 10.1007/s10909-012-0739-8
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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