Surface Preparation of InAs (110) Using Atomic Hydrogen
Atomic hydrogen cleaning has been used to produce structurally and electronically damage-free InAs(110) surfaces. X-ray photoelectron spectroscopy (XPS) was used to obtain chemical composition and chemical state information about the surface, before and after the removal of the atmospheric contamin...
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doaj-1ee6f77f82b44ca9a8878314a940df762020-11-24T23:48:00ZengSultan Qaboos UniversitySultan Qaboos University Journal for Science1027-524X2414-536X2002-06-017230331010.24200/squjs.vol7iss2pp303-310298Surface Preparation of InAs (110) Using Atomic HydrogenT.D. Veal0C.F. McConville1S.H. Al-Harthi2Department of Physics, University of Warwick, CV4 7AL, United KingdomDepartment of Physics, University of Warwick, CV4 7AL, United KingdomDepartment of Physics, College of Science, Sultan Qaboos University, P.O.Box 36, Al khod 123, Muscat, Sultanate of OmanAtomic hydrogen cleaning has been used to produce structurally and electronically damage-free InAs(110) surfaces. X-ray photoelectron spectroscopy (XPS) was used to obtain chemical composition and chemical state information about the surface, before and after the removal of the atmospheric contamination. Low energy electron diffraction (LEED) and high-resolution electron-energy-loss spectroscopy (HREELS) were also used, respectively, to determine the surface reconstruction and degree of surface ordering, and to probe the adsorbed contaminant vibrational modes and the collective excitations of the clean surface. Clean, ordered and stoichiometric InAs(110)-(1×1) surfaces were obtained by exposure to thermally generated atomic hydrogen at a substrate temperature as low as 400ºC. Semi-classical dielectric theory analysis of HREEL spectra of the phonon and plasmon excitations of the clean surface indicate that no electronic damage or dopant passivation were induced by the surface preparation method.https://journals.squ.edu.om/index.php/squjs/article/view/299InAs(110), Hydrogen Cleaning, Plasmon Excitations, HREEL, XPS |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
T.D. Veal C.F. McConville S.H. Al-Harthi |
spellingShingle |
T.D. Veal C.F. McConville S.H. Al-Harthi Surface Preparation of InAs (110) Using Atomic Hydrogen Sultan Qaboos University Journal for Science InAs(110), Hydrogen Cleaning, Plasmon Excitations, HREEL, XPS |
author_facet |
T.D. Veal C.F. McConville S.H. Al-Harthi |
author_sort |
T.D. Veal |
title |
Surface Preparation of InAs (110) Using Atomic Hydrogen |
title_short |
Surface Preparation of InAs (110) Using Atomic Hydrogen |
title_full |
Surface Preparation of InAs (110) Using Atomic Hydrogen |
title_fullStr |
Surface Preparation of InAs (110) Using Atomic Hydrogen |
title_full_unstemmed |
Surface Preparation of InAs (110) Using Atomic Hydrogen |
title_sort |
surface preparation of inas (110) using atomic hydrogen |
publisher |
Sultan Qaboos University |
series |
Sultan Qaboos University Journal for Science |
issn |
1027-524X 2414-536X |
publishDate |
2002-06-01 |
description |
Atomic hydrogen cleaning has been used to produce structurally and electronically damage-free InAs(110) surfaces. X-ray photoelectron spectroscopy (XPS) was used to obtain chemical composition and chemical state information about the surface, before and after the removal of the atmospheric contamination. Low energy electron diffraction (LEED) and high-resolution electron-energy-loss spectroscopy (HREELS) were also used, respectively, to determine the surface reconstruction and degree of surface ordering, and to probe the adsorbed contaminant vibrational modes and the collective excitations of the clean surface. Clean, ordered and stoichiometric InAs(110)-(1×1) surfaces were obtained by exposure to thermally generated atomic hydrogen at a substrate temperature as low as 400ºC. Semi-classical dielectric theory analysis of HREEL spectra of the phonon and plasmon excitations of the clean surface indicate that no electronic damage or dopant passivation were induced by the surface preparation method. |
topic |
InAs(110), Hydrogen Cleaning, Plasmon Excitations, HREEL, XPS |
url |
https://journals.squ.edu.om/index.php/squjs/article/view/299 |
work_keys_str_mv |
AT tdveal surfacepreparationofinas110usingatomichydrogen AT cfmcconville surfacepreparationofinas110usingatomichydrogen AT shalharthi surfacepreparationofinas110usingatomichydrogen |
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