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Conference Paper: Electron momentum distribution in semiconductors: A comparative study of the Compton profile and positron angular correlation methods

TitleElectron momentum distribution in semiconductors: A comparative study of the Compton profile and positron angular correlation methods
Authors
KeywordsAngular Correlation of Annihilation Radiation Anisotropies
Autocorrelation Function
Compton Profile
Momentum Density
Issue Date1997
PublisherTrans Tech Publications Ltd. The Journal's web site is located at http://www.scientific.net
Citation
Materials Science Forum, 1997, v. 255-257, p. 179-183 How to Cite?
AbstractCompton profile and angular correlation of positron annihilation radiations are calculated to study the electron momentum distributions and the effect of the positron thereon. We have found that the major difference between the electron momentum density and the electron-positron momentum density is due to the highly anisotropic positron wavefunction in semiconductors. The positron-electron enhancement factor is found to be weakly momentum dependent. The features at the low momentum region of the momentum densities are attributed for the σ and π bonds of the sp 3 hybridised orbitals.
Persistent Identifierhttp://hdl.handle.net/10722/109751
ISSN
2005 Impact Factor: 0.399
References

 

DC FieldValueLanguage
dc.contributor.authorPanda, BKen_HK
dc.contributor.authorFung, Sen_HK
dc.contributor.authorBeling, CDen_HK
dc.date.accessioned2010-09-26T01:35:42Z-
dc.date.available2010-09-26T01:35:42Z-
dc.date.issued1997en_HK
dc.identifier.citationMaterials Science Forum, 1997, v. 255-257, p. 179-183en_HK
dc.identifier.issn0255-5476en_HK
dc.identifier.urihttp://hdl.handle.net/10722/109751-
dc.description.abstractCompton profile and angular correlation of positron annihilation radiations are calculated to study the electron momentum distributions and the effect of the positron thereon. We have found that the major difference between the electron momentum density and the electron-positron momentum density is due to the highly anisotropic positron wavefunction in semiconductors. The positron-electron enhancement factor is found to be weakly momentum dependent. The features at the low momentum region of the momentum densities are attributed for the σ and π bonds of the sp 3 hybridised orbitals.en_HK
dc.languageengen_HK
dc.publisherTrans Tech Publications Ltd. The Journal's web site is located at http://www.scientific.neten_HK
dc.relation.ispartofMaterials Science Forumen_HK
dc.rightsMaterials Science Forum. Copyright © Trans Tech Publications Ltd.en_HK
dc.subjectAngular Correlation of Annihilation Radiation Anisotropiesen_HK
dc.subjectAutocorrelation Functionen_HK
dc.subjectCompton Profileen_HK
dc.subjectMomentum Densityen_HK
dc.titleElectron momentum distribution in semiconductors: A comparative study of the Compton profile and positron angular correlation methodsen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0255-5476&volume=255-257&spage=179&epage=183&date=1997&atitle=Electron+Momentum+Distribution+in+Semiconductors:+A+Comparative+Study+of+the+Compton+Profile+and+Positron+Angular+Correlation+Methodsen_HK
dc.identifier.emailFung, S: sfung@hku.hken_HK
dc.identifier.emailBeling, CD: cdbeling@hkucc.hku.hken_HK
dc.identifier.authorityFung, S=rp00695en_HK
dc.identifier.authorityBeling, CD=rp00660en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-5244364315en_HK
dc.identifier.hkuros29698en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-5244364315&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume255-257en_HK
dc.identifier.spage179en_HK
dc.identifier.epage183en_HK
dc.publisher.placeSwitzerlanden_HK
dc.identifier.scopusauthoridPanda, BK=22963418500en_HK
dc.identifier.scopusauthoridFung, S=7201970040en_HK
dc.identifier.scopusauthoridBeling, CD=7005864180en_HK

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