Article: Direct observation of a Ga adlayer on a GaN(0001) surface by LEED Patterson inversion

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TitleDirect observation of a Ga adlayer on a GaN(0001) surface by LEED Patterson inversion
AuthorsXu, SH1
Wu, H1
Dai, XQ1
Lau, WP1
Zheng, LX1
Xie, MH1
Tong, SY2
KeywordsPhysics
Issue Date2003
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
CitationPhysical Review B - Condensed Matter And Materials Physics, 2003, v. 67 n. 12, p. 1254091-1254094 [How to Cite?]
DOI: http://dx.doi.org/10.1103/PhysRevB.67.125409
AbstractA low-energy electron diffraction (LEED) Patterson function (PF) with multiple incident angles is used to obtain three-dimensional interatomic information of hexagonal GaN(0001) grown on a 6H-SiC(0001)-√3 x √3 surface. A Ga-Ga atomic pair between the Ga adlayer and the terminating Ga layer is observed in the LEED PF. This provides direct experimental evidence to support the structural model proposed by first-principles calculations. The LEED PF also shows that the GaN film has a hexagonal structure and the surface has single-bilayer steps.
ISSN0163-1829
DOIhttp://dx.doi.org/10.1103/PhysRevB.67.125409
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorXu, SH
dc.contributor.authorWu, H
dc.contributor.authorDai, XQ
dc.contributor.authorLau, WP
dc.contributor.authorZheng, LX
dc.contributor.authorXie, MH
dc.contributor.authorTong, SY
dc.date.accessioned2007-03-23T04:44:46Z
dc.date.available2007-03-23T04:44:46Z
dc.date.issued2003
dc.description.abstractA low-energy electron diffraction (LEED) Patterson function (PF) with multiple incident angles is used to obtain three-dimensional interatomic information of hexagonal GaN(0001) grown on a 6H-SiC(0001)-√3 x √3 surface. A Ga-Ga atomic pair between the Ga adlayer and the terminating Ga layer is observed in the LEED PF. This provides direct experimental evidence to support the structural model proposed by first-principles calculations. The LEED PF also shows that the GaN film has a hexagonal structure and the surface has single-bilayer steps.
dc.description.naturepublished_or_final_version
dc.format.extent449374 bytes
dc.format.extent26624 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypeapplication/msword
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2003, v. 67 n. 12, p. 1254091-1254094 [How to Cite?]
DOI: http://dx.doi.org/10.1103/PhysRevB.67.125409
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.67.125409
dc.identifier.epage1254094
dc.identifier.hkuros77193
dc.identifier.isiWOS:000182158000092
dc.identifier.issn0163-1829
dc.identifier.issue12
dc.identifier.openurl
dc.identifier.scopuseid_2-s2.0-0038558145
dc.identifier.spage1254091
dc.identifier.urihttp://hdl.handle.net/10722/43389
dc.identifier.volume67
dc.languageeng
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
dc.publisher.placeUnited States
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physics
dc.relation.referencesReferences in Scopus
dc.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License
dc.subjectPhysics
dc.titleDirect observation of a Ga adlayer on a GaN(0001) surface by LEED Patterson inversion
dc.typeArticle
Author Affiliations
  1. The University of Hong Kong
  2. City University of Hong Kong