Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/91720
Type: Artigo de periódico
Title: Zero-point Vacancy Concentration In A Model Quantum Solid: A Reversible-work Approach
Author: Pessoa R.
De Koning M.
Vitiello S.A.
Abstract: We investigate the influence of anharmonic effects on the zero-point vacancy concentration in a boson system model in the solid phase at T=0 K. We apply the reversible-work method to compute the vacancy formation free energy and the vacancy concentration in the system. A comparison of our results with those obtained using the harmonic approximation show that anharmonic effects reduce the formation free energy by ∼25%, leading to an increase of the zero-point vacancy concentration by more than an order of magnitude. © 2009 Springer Science+Business Media, LLC.
Editor: 
Rights: fechado
Identifier DOI: 10.1007/s10955-009-9702-8
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-62949204652&partnerID=40&md5=1b19fa018216a94e4f9ca2e99ed7f1a9
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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