Surface electronic structure study of Au/Si(111) reconstructions: Observation of a crystal to glass transition

Surface electronic structure study of Au/Si(111) reconstructions Observation of a crystal to glass transition

The α-√3×√3, β-√3×√3, and 6×6 surfaces of Au/Si(111) have been studied by angle-resolved photoelectron spectroscopy (ARPES). The α-√3×√3 surface shows four surface state bands, one of which is a dispersing metallic band. Except for one nondispersing band near the Fermi level, the β-√3×√3 surface sho...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Vol. 66; no. 16
Main Authors: Zhang, Hanmin, Balasubramanian, T., Uhrberg, R. I. G.
Format: Journal Article
Language:English
Published: 2002
Subjects:
Fysik
Natural Sciences
Naturvetenskap
Physical Sciences
Physics
TECHNOLOGY
TEKNIKVETENSKAP
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Summary:The α-√3×√3, β-√3×√3, and 6×6 surfaces of Au/Si(111) have been studied by angle-resolved photoelectron spectroscopy (ARPES). The α-√3×√3 surface shows four surface state bands, one of which is a dispersing metallic band. Except for one nondispersing band near the Fermi level, the β-√3×√3 surface shows surface bands that are similar to those of α-√3×√3. Eight surface state bands have been found on the 6×6 surface instead of two as reported in the literature. Seven of these surface states are broadened into three, when the 6×6 phase is transformed into the quenched β-√3×√3 phase just by annealing followed by quick cooling. The transition between the 6×6 and quenched β-√3×√3 phases is consistent with a crystal-glass transition.
ISSN:1550-235X
1098-0121
DOI:10.1103/PhysRevB.66.165402