ORIGIN OF THE SEMICONDUCTING NATURE OF THE NA-ADSORBED SI(111) SURFACE
SCIE
SCOPUS
- Title
- ORIGIN OF THE SEMICONDUCTING NATURE OF THE NA-ADSORBED SI(111) SURFACE
- Authors
- Lee, KD; Chung, J
- Date Issued
- 1998-01-15
- Publisher
- AMERICAN PHYSICAL SOC
- Abstract
- The change of electronic properties induced by Na adsorption on the Si(111)-(3x1) surface has been investigated by using high-resolution electron-energy-loss spectroscopy. We find that the initially (3X1) surface at 1/3 monolayer (ML) develops into an ordered (6X1) phase at 1/2 ML while keeping the surface semiconducting. The surface further transforms into another (3X1) phase at 2/3 ML still exhibiting the semiconducting nature before turning into a metallic phase at saturation. We ascribe this semiconducting nature of the surface above 1/3 ML to the bipolaronic effect primarily caused by the onsite electron-electron correlation.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12027
- DOI
- 10.1103/PhysRevB.57.R2053
- ISSN
- 1098-0121
- Article Type
- Article
- Citation
- PHYSICAL REVIEW B, vol. 57, no. 4, page. R2053 - R2056, 1998-01-15
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