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Core-level shifts of the c(8 x 2)-reconstructed InAs(100) and InSb(100) surfaces

Laukkanen, P. ; Punkkinen, M. P. J. ; Ahola-Tuomi, M. ; Lang, J. ; Schulte, Karina LU ; Pietzsch, Annette LU ; Kuzmin, M. ; Sadowski, Janusz LU ; Adell, Johan LU and Perala, R. E. , et al. (2010) In Journal of Electron Spectroscopy and Related Phenomena 177(1). p.52-57
Abstract
We have studied In-stabilized c(8 2)-reconstructed InAs(1 0 0) and InSb(1 0 0) semiconductor surfaces, which play a key role in growing improved III-V interfaces for electronics devices, by core-level photoelectron spectroscopy and first-principles calculations. The calculated surface core-level shifts (SCLSs) for the zeta and zeta a models, which have been previously established to describe the atomic structures of the III-V(1 00)c(8 x 2) surfaces, yield hitherto not reported interpretation for the As 3d, In 4d, and Sb 4d core-level spectra of the III-V(1 00)c(8 x 2) surfaces, concerning the number and origins of SCLSs. The fitting analysis of the measured spectra with the calculated zeta and zeta a SCLS values shows that the InSb spectra... (More)
We have studied In-stabilized c(8 2)-reconstructed InAs(1 0 0) and InSb(1 0 0) semiconductor surfaces, which play a key role in growing improved III-V interfaces for electronics devices, by core-level photoelectron spectroscopy and first-principles calculations. The calculated surface core-level shifts (SCLSs) for the zeta and zeta a models, which have been previously established to describe the atomic structures of the III-V(1 00)c(8 x 2) surfaces, yield hitherto not reported interpretation for the As 3d, In 4d, and Sb 4d core-level spectra of the III-V(1 00)c(8 x 2) surfaces, concerning the number and origins of SCLSs. The fitting analysis of the measured spectra with the calculated zeta and zeta a SCLS values shows that the InSb spectra are reproduced by the zeta SCLSs better than by the zeta a SCLSs. Interestingly, the zeta a fits agree better with the InAs spectra than the zeta fits do, indicating that the zeta a model describes the InAs surface better than the InSb surface. These results are in agreement with previous X-ray diffraction data. Furthermore, an introduction of the complete-screening model, which includes both the initial and final state effects, does not improve the fitting of the InSb spectra, proposing the suitability of the initial-state model for the SCLSs of the III-V(1 0 0)c(8 x 2) surfaces. The found SCLSs are discussed with the ab initio on-site charges. (C) 2010 Elsevier B.V. All rights reserved. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Indium, arsenide (InAs), Indium antimonide (InSb), Surface reconstruction, Ab initio calculations, spectroscopy, Surface core-level shift (SCLS), Synchrotron radiation photoelectron
in
Journal of Electron Spectroscopy and Related Phenomena
volume
177
issue
1
pages
52 - 57
publisher
Elsevier
external identifiers
  • wos:000276713800009
  • scopus:77949271532
ISSN
0368-2048
DOI
10.1016/j.elspec.2010.02.002
language
English
LU publication?
yes
id
b15a2482-c62c-469b-ac52-8025ce6897ea (old id 1602997)
date added to LUP
2016-04-01 14:19:47
date last changed
2025-04-04 14:58:31
@article{b15a2482-c62c-469b-ac52-8025ce6897ea,
  abstract     = {{We have studied In-stabilized c(8 2)-reconstructed InAs(1 0 0) and InSb(1 0 0) semiconductor surfaces, which play a key role in growing improved III-V interfaces for electronics devices, by core-level photoelectron spectroscopy and first-principles calculations. The calculated surface core-level shifts (SCLSs) for the zeta and zeta a models, which have been previously established to describe the atomic structures of the III-V(1 00)c(8 x 2) surfaces, yield hitherto not reported interpretation for the As 3d, In 4d, and Sb 4d core-level spectra of the III-V(1 00)c(8 x 2) surfaces, concerning the number and origins of SCLSs. The fitting analysis of the measured spectra with the calculated zeta and zeta a SCLS values shows that the InSb spectra are reproduced by the zeta SCLSs better than by the zeta a SCLSs. Interestingly, the zeta a fits agree better with the InAs spectra than the zeta fits do, indicating that the zeta a model describes the InAs surface better than the InSb surface. These results are in agreement with previous X-ray diffraction data. Furthermore, an introduction of the complete-screening model, which includes both the initial and final state effects, does not improve the fitting of the InSb spectra, proposing the suitability of the initial-state model for the SCLSs of the III-V(1 0 0)c(8 x 2) surfaces. The found SCLSs are discussed with the ab initio on-site charges. (C) 2010 Elsevier B.V. All rights reserved.}},
  author       = {{Laukkanen, P. and Punkkinen, M. P. J. and Ahola-Tuomi, M. and Lang, J. and Schulte, Karina and Pietzsch, Annette and Kuzmin, M. and Sadowski, Janusz and Adell, Johan and Perala, R. E. and Ropo, M. and Kokko, K. and Vitos, L. and Johansson, B. and Pessa, M. and Vayrynen, I. J.}},
  issn         = {{0368-2048}},
  keywords     = {{Indium; arsenide (InAs); Indium antimonide (InSb); Surface reconstruction; Ab initio calculations; spectroscopy; Surface core-level shift (SCLS); Synchrotron radiation photoelectron}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{52--57}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Electron Spectroscopy and Related Phenomena}},
  title        = {{Core-level shifts of the c(8 x 2)-reconstructed InAs(100) and InSb(100) surfaces}},
  url          = {{http://dx.doi.org/10.1016/j.elspec.2010.02.002}},
  doi          = {{10.1016/j.elspec.2010.02.002}},
  volume       = {{177}},
  year         = {{2010}},
}