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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2011, Volume 93, Issue 9, Pages 579–583
(Mi jetpl1894)
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This article is cited in 3 scientific papers (total in 3 papers)
CONDENSED MATTER
Electronic structure of Ge(111)-(2$\times$1) surface in the presence of
doping atoms. Ab initio analysis of STM data
S. V. Savinova, S. I. Oreshkinb, N. S. Maslovaa a M. V. Lomonosov Moscow State University, Faculty of Physics
b P. K. Sternberg Astronomical Institute, M. V. Lomonosov Moscow State University
Abstract:
We present the result of first principles modeling of the Ge(111)-($2{\times}1$) surface electronic structure in the presence of donor doping atom at certain position in the surface bi-layer of ($2{\times}1$) reconstruction. We briefly compare these results with the data of experimental low temperature STM investigations. Ab initio calculations demonstrate that doping atom strongly disturbs local electronic structure. The separate state, most probably split off conduction band, appears in the bandgap. Surface LDOS reveals spatial oscillations in vicinity of foreign atom. We also show that the spatial extent of non-negligible inter-atomic interaction between neighboring donor atoms is not less then 70 Å.
Received: 15.02.2011 Revised: 28.03.2011
Citation:
S. V. Savinov, S. I. Oreshkin, N. S. Maslova, “Electronic structure of Ge(111)-(2$\times$1) surface in the presence of
doping atoms. Ab initio analysis of STM data”, Pis'ma v Zh. Èksper. Teoret. Fiz., 93:9 (2011), 579–583; JETP Letters, 93:9 (2011), 521–525
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https://www.mathnet.ru/eng/jetpl1894 https://www.mathnet.ru/eng/jetpl/v93/i9/p579
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Abstract page: | 173 | Full-text PDF : | 53 | References: | 54 |
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