Koczorowski, W;
Puchalska, A;
Grzela, T;
Jurczyszyn, L;
Schofield, SR;
Czajka, R;
Curson, NJ;
(2016)
STM and DFT study on formation and characterization of Ba-incorporated phases on a Ge(001) surface.
Physical Review B - Condensed Matter and Materials Physics
, 93
(19)
, Article 195304. 10.1103/PhysRevB.93.195304.
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Koczorowski et al STM and DFT Study on Formation and Characterization of Ba Incorporated phases on a Ge(001) surface VoR.pdf Download (2MB) | Preview |
Abstract
We characterize the incorporation of Ba adatoms into the Ge(001) surface, resulting in the formation of one-dimensional structures with an internal 2×3 periodicity, after the deposition of Ba atoms at 970 K or at room temperature followed by a 770 K anneal. Scanning tunneling microscopy (STM) data were compared with theoretically simulated STM images generated by density functional theory electronic structure calculations. Excellent agreement between experiment and simulation was found when using an adopted structural model that assumes partial removal of the surface Ge dimers in the [1–10] surface direction and subsequent addition of a single Ba atom to the substrate second layer. Structural assignments for a number of defects observed within regions of the 2×3 reconstruction were also obtained.
Type: | Article |
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Title: | STM and DFT study on formation and characterization of Ba-incorporated phases on a Ge(001) surface |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1103/PhysRevB.93.195304 |
Publisher version: | http://dx.doi.org/10.1103/PhysRevB.93.195304 |
Language: | English |
Additional information: | Copyright © 2016 American Physical Society. The published version of record [Koczorowski, W; Puchalska, A; Grzela, T; Jurczyszyn, L; Schofield, SR; Czajka, R; Curson, NJ; (2016) STM and DFT study on formation and characterization of Ba-incorporated phases on a Ge(001) surface. Physical Review B - Condensed Matter and Materials Physics , 93 (19) , Article 195304. 10.1103/PhysRevB.93.195304] is available at http://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.195304 |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
URI: | https://discovery.ucl.ac.uk/id/eprint/1496992 |
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