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- Title
Ab initio study of surface electronic structure of phosphorus donor impurity on Ge(111)-(2×1) surface.
- Authors
Savinov, S.; Oreshkin, A.; Oreshkin, S.
- Abstract
We present the results of numerical modeling of the electronic properties of the Ge(111)-(2 × 1) surface in the vicinity of a P donor impurity atom near the surface. We have shown that, in spite of well-established bulk donor impurity energy level position at the very bottom of the conduction band, the surface donor impurity might produce an energy level below the Fermi energy, depending on impurity atom local environment. It has been demonstrated that the impurity located in subsurface atomic layers is visible in scanning tunneling microscopy experiment. The quasi-one-dimensional character of the impurity image observed in scanning tunneling microscopy experiments is confirmed by our computer simulations.
- Subjects
ELECTRONIC structure; PHOSPHORUS; GERMANIUM compounds; METALLIC surfaces; CONDUCTION bands; SCANNING tunneling microscopy; COMPUTER simulation
- Publication
JETP Letters, 2013, Vol 97, Issue 7, p393
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364013070102