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(7×7) reconstruction as barrier for Schottky-barrier formation at the Ga/Si(111) interface.
- Source :
-
Applied Physics Letters . 9/20/2010, Vol. 97 Issue 12, p122105. 3p. - Publication Year :
- 2010
-
Abstract
- We report the change in electronic properties of the Ga/Si interface by monitoring the Ga(3d) core-level photoelectron spectra and electron diffraction induced by submonolayer Ga adsorption on Si(111)-7×7 surface. The spectra shows a flat band for submonolayer coverages, attributed to the metallic nature of the Si(111)-7×7 reconstruction and a premetallic band structure of two-dimensional Ga islands. At 1 ML, electron diffraction pattern shows metallic (7×7) to semiconducting (1×1) phase-transition and the spin-orbit split branching ratio of Ga(2p) core level attain the metallic bulk value, and the barrier assumes the Schottky-Mott value while full width half maxima and branching ratio attain bulk values. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 97
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 53918186
- Full Text :
- https://doi.org/10.1063/1.3490250