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Article: Temperature dependence of the positronium work function in aluminum

TitleTemperature dependence of the positronium work function in aluminum
Authors
KeywordsPhysics
Issue Date1994
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B, 1994, v. 50 n. 8, p. 5695-5698 How to Cite?
AbstractThe electron and positron chemical potentials and their volume derivatives are calculated in Al using the first-principles pseudopotential technique and the frozen-core approximation method, respectively. The positron deformation potential of -8.03 eV obtained by this method agrees very well with that found in other first-principles calculations. The variation of the positronium work function with temperature is calculated by including the thermal lattice vibrations into the electron and positron potentials. It is observed that the temperature dependence of the positronium work function does not arise entirely from the volume expansion of the lattice as has been suggested in the past. Proper inclusion of the nonzero-temperature derivative of the positronium work function at constant volume leads to good agreement between the positron deformation potential as obtained from positronium work function data and present theoretical values. © 1994 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/43232
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorPanda, BKen_HK
dc.contributor.authorBeling, CDen_HK
dc.contributor.authorFung, Sen_HK
dc.date.accessioned2007-03-23T04:41:49Z-
dc.date.available2007-03-23T04:41:49Z-
dc.date.issued1994en_HK
dc.identifier.citationPhysical Review B, 1994, v. 50 n. 8, p. 5695-5698en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43232-
dc.description.abstractThe electron and positron chemical potentials and their volume derivatives are calculated in Al using the first-principles pseudopotential technique and the frozen-core approximation method, respectively. The positron deformation potential of -8.03 eV obtained by this method agrees very well with that found in other first-principles calculations. The variation of the positronium work function with temperature is calculated by including the thermal lattice vibrations into the electron and positron potentials. It is observed that the temperature dependence of the positronium work function does not arise entirely from the volume expansion of the lattice as has been suggested in the past. Proper inclusion of the nonzero-temperature derivative of the positronium work function at constant volume leads to good agreement between the positron deformation potential as obtained from positronium work function data and present theoretical values. © 1994 The American Physical Society.en_HK
dc.format.extent855412 bytes-
dc.format.extent28160 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.relation.ispartofPhysical Review Ben_HK
dc.rightsPhysical Review B (Condensed Matter). Copyright © American Physical Society.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysicsen_HK
dc.titleTemperature dependence of the positronium work function in aluminumen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0163-1829&volume=50&issue=8&spage=5695&epage=5698&date=1994&atitle=Temperature+dependence+of+the+positronium+work+function+in+aluminumen_HK
dc.identifier.emailBeling, CD: cdbeling@hkucc.hku.hken_HK
dc.identifier.emailFung, S: sfung@hku.hken_HK
dc.identifier.authorityBeling, CD=rp00660en_HK
dc.identifier.authorityFung, S=rp00695en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.50.5695en_HK
dc.identifier.scopuseid_2-s2.0-35949006158en_HK
dc.identifier.hkuros3356-
dc.identifier.volume50en_HK
dc.identifier.issue8en_HK
dc.identifier.spage5695en_HK
dc.identifier.epage5698en_HK
dc.identifier.isiWOS:A1994PG28300077-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridPanda, BK=22963418500en_HK
dc.identifier.scopusauthoridBeling, CD=7005864180en_HK
dc.identifier.scopusauthoridFung, S=7201970040en_HK

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