A classical picture of the role of vacancies and interstitials in Helium-4

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dc.creatorMa, Ping Nang
dc.creatorPollet, Lode
dc.creatorTroyer, Matthias
dc.creatorZhang, Fu Chun
dc.date2007-10-21
dc.date2007-10-27
dc.date.accessioned2026-07-07T08:38:41Z
dc.date.available2026-07-07T08:38:41Z
dc.descriptionMotivated by experimental hints for supersolidity in Helium-4, we perform Monte Carlo simulations of vacancies and interstitials in a classical two-and three-dimensional Lennard-Jones solid. We confirm a strong binding energy of vacancies which is of the order of Lennard-Jones attraction. This is reminiscent of what has been found for vacancies in Quantum Monte Carlo simulations. In addition, we find a strong attraction and large binding energy of interstitials in two-dimensional simulations. This is mainly due to the formation of a pair of dislocations by clustering interstitials, in which minimizes the elastic deformation energy. We interpret the results in light of the properties of Helium-4.
dc.description4 pages
dc.identifierhttps://arxiv.org/abs/0710.3940
dc.identifierhttp://arxiv.org/abs/0710.3940
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/140815
dc.subjectOther Condensed Matter
dc.titleA classical picture of the role of vacancies and interstitials in Helium-4
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