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Article: A classical picture of the role of vacancies and interstitials in helium-4

TitleA classical picture of the role of vacancies and interstitials in helium-4
Authors
KeywordsBinding
Helium
Interstitials
Lennard Jones
Monte Carlo
Phase separation
Vacancies
Issue Date2008
PublisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0022-2291
Citation
Journal Of Low Temperature Physics, 2008, v. 152 n. 5-6, p. 156-163 How to Cite?
AbstractMotivated 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 the 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, which minimizes the elastic deformation energy. We interpret the results in light of the properties of Helium-4. © Springer Science+Business Media, LLC 2008.
Persistent Identifierhttp://hdl.handle.net/10722/59630
ISSN
2015 Impact Factor: 0.787
2015 SCImago Journal Rankings: 0.531
ISI Accession Number ID
Funding AgencyGrant Number
RGC of HKSAR
Funding Information:

The ALPS libraries [26, 27] were used for parallelization and error evaluation. The simulations were performed on the Hreidar cluster of ETH Zurich and the hpcpower cluster of HKU. We acknowledge fruitful discussions with J. Wang, G. H. Chen, S. Q. Shen, and P. Corboz. Financial support from RGC of HKSAR is also greatly acknowledged.

References

 

DC FieldValueLanguage
dc.contributor.authorMa, PNen_HK
dc.contributor.authorPollet, Len_HK
dc.contributor.authorTroyer, Men_HK
dc.contributor.authorZhang, FCen_HK
dc.date.accessioned2010-05-31T03:54:07Z-
dc.date.available2010-05-31T03:54:07Z-
dc.date.issued2008en_HK
dc.identifier.citationJournal Of Low Temperature Physics, 2008, v. 152 n. 5-6, p. 156-163en_HK
dc.identifier.issn0022-2291en_HK
dc.identifier.urihttp://hdl.handle.net/10722/59630-
dc.description.abstractMotivated 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 the 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, which minimizes the elastic deformation energy. We interpret the results in light of the properties of Helium-4. © Springer Science+Business Media, LLC 2008.en_HK
dc.languageengen_HK
dc.publisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0022-2291en_HK
dc.relation.ispartofJournal of Low Temperature Physicsen_HK
dc.subjectBindingen_HK
dc.subjectHeliumen_HK
dc.subjectInterstitialsen_HK
dc.subjectLennard Jonesen_HK
dc.subjectMonte Carloen_HK
dc.subjectPhase separationen_HK
dc.subjectVacanciesen_HK
dc.titleA classical picture of the role of vacancies and interstitials in helium-4en_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-2291&volume=152&spage=156&epage=163&date=2008&atitle=A+classical+picture+of+the+role+of+vacancies+and+interstitials+in+Helium-4en_HK
dc.identifier.emailZhang, FC: fuchun@hkucc.hku.hken_HK
dc.identifier.authorityZhang, FC=rp00840en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s10909-008-9816-4en_HK
dc.identifier.scopuseid_2-s2.0-50549084955en_HK
dc.identifier.hkuros152369en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-50549084955&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume152en_HK
dc.identifier.issue5-6en_HK
dc.identifier.spage156en_HK
dc.identifier.epage163en_HK
dc.identifier.isiWOS:000258615600002-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridMa, PN=36840134000en_HK
dc.identifier.scopusauthoridPollet, L=13410469100en_HK
dc.identifier.scopusauthoridTroyer, M=7004750165en_HK
dc.identifier.scopusauthoridZhang, FC=14012468800en_HK

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