Structure of III-Sb(001) Growth Surfaces: The Role of Heterodimers | Zendy

William Barvosa-Carter | Zendy; Allan S. Bracker | Zendy; J. C. Culbertson | Zendy; B. Z. Nosho | Zendy; B. V. Shanabrook | Zendy; L. J. Whitman | Zendy; Hanchul Kim | Zendy; Normand A. Modine | Zendy; Efthimios Kaxiras | Zendy

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Structure of III-Sb(001) Growth Surfaces: The Role of Heterodimers

Author(s) -

William Barvosa-Carter,

Allan S. Bracker,

J. C. Culbertson,

B. Z. Nosho,

B. V. Shanabrook,

L. J. Whitman,

Hanchul Kim,

Normand A. Modine,

Efthimios Kaxiras

Publication year - 2000

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.84.4649

Subject(s) - nucleation , molecular beam epitaxy , materials science , chemical physics , diffraction , crystallography , layer (electronics) , surface reconstruction , range (aeronautics) , epitaxy , antimony , atmospheric temperature range , surface (topology) , condensed matter physics , molecular physics , nanotechnology , optics , chemistry , thermodynamics , physics , geometry , composite material , metallurgy , mathematics

We have determined the structure of AlSb and GaSb (001) surfaces prepared by molecular beam epitaxy under typical Sb-rich device growth conditions. Within the range of flux and temperature where the diffraction pattern is nominally (1x3), we find that there are actually three distinct, stable (4x3) surface reconstructions. The three structures differ from any previously proposed for these growth conditions, with two of the reconstructions incorporating mixed III-V dimers within the Sb surface layer. These heterodimers appear to play an important role in island nucleation and growth.

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