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Type: Artigo de periódico
Title: Dislocation Mobility In A Quantum Crystal: The Case Of Solid 4he.
Author: Pessoa, Renato
Vitiello, S A
de Koning, Maurice
Abstract: We investigate the structure and mobility of dislocations in hcp 4He crystals. In addition to fully characterizing the five elastic constants of this system, we obtain direct insight into dislocation core structures on the basal plane, which demonstrates a tendency toward dissociation into partial dislocations. Moreover, our results suggest that intrinsic lattice resistance is an essential factor in the mobility of these dislocations. This insight sheds new light on the possible correlation between dislocation mobility and the observed macroscopic behavior of crystalline 4He.
Rights: aberto
Identifier DOI: 
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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