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Title: Multiple bonding configurations for Te absorbed on the Ge(001) surface.

Abstract

Using high-resolution x-ray standing waves and low-energy electron diffraction, the structure of Te adsorbed on Ge(001) was studied. A coverage-dependent structural rearrangement was observed between Te coverages of 1 and 0.5 monolayer (ML). At Te coverages near 1 ML, Te was found to adsorb in a bridge site, as expected. However, at Te coverages near 0.5 ML, a structure unanticipated for Group VI/Group IV adsorption was discovered. Te-Ge heterodimers were formed with an average valency of 5, allowing them to satisfy all surface dangling bonds. The results help explain the efficacy of Te as a surfactant in epitaxial growth of Ge/Si(001).

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Science Foundation (NSF); USDOE
OSTI Identifier:
943059
Report Number(s):
ANL/MSD/JA-37150
Journal ID: ISSN 1098-0121; TRN: US201002%%565
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Phys. Rev. B
Additional Journal Information:
Journal Volume: 60; Journal Issue: 12 ; Sep. 15, 1999; Journal ID: ISSN 1098-0121
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; ADSORPTION; BONDING; ELECTRON DIFFRACTION; CRYSTAL GROWTH; CRYSTAL STRUCTURE; EPITAXY; GERMANIUM; STANDING WAVES; SURFACES; SURFACTANTS; TELLURIUM

Citation Formats

Lyman, P. F., Marasco, D. L., Walko, D. A., Bedzyk, M. J., Materials Science Division, Northwestern Univ., and Univ. of Wisconsin at Milwaukee. Multiple bonding configurations for Te absorbed on the Ge(001) surface.. United States: N. p., 1999. Web. doi:10.1103/PhysRevB.60.8704.
Lyman, P. F., Marasco, D. L., Walko, D. A., Bedzyk, M. J., Materials Science Division, Northwestern Univ., & Univ. of Wisconsin at Milwaukee. Multiple bonding configurations for Te absorbed on the Ge(001) surface.. United States. doi:10.1103/PhysRevB.60.8704.
Lyman, P. F., Marasco, D. L., Walko, D. A., Bedzyk, M. J., Materials Science Division, Northwestern Univ., and Univ. of Wisconsin at Milwaukee. Wed . "Multiple bonding configurations for Te absorbed on the Ge(001) surface.". United States. doi:10.1103/PhysRevB.60.8704.
@article{osti_943059,
title = {Multiple bonding configurations for Te absorbed on the Ge(001) surface.},
author = {Lyman, P. F. and Marasco, D. L. and Walko, D. A. and Bedzyk, M. J. and Materials Science Division and Northwestern Univ. and Univ. of Wisconsin at Milwaukee},
abstractNote = {Using high-resolution x-ray standing waves and low-energy electron diffraction, the structure of Te adsorbed on Ge(001) was studied. A coverage-dependent structural rearrangement was observed between Te coverages of 1 and 0.5 monolayer (ML). At Te coverages near 1 ML, Te was found to adsorb in a bridge site, as expected. However, at Te coverages near 0.5 ML, a structure unanticipated for Group VI/Group IV adsorption was discovered. Te-Ge heterodimers were formed with an average valency of 5, allowing them to satisfy all surface dangling bonds. The results help explain the efficacy of Te as a surfactant in epitaxial growth of Ge/Si(001).},
doi = {10.1103/PhysRevB.60.8704},
journal = {Phys. Rev. B},
issn = {1098-0121},
number = 12 ; Sep. 15, 1999,
volume = 60,
place = {United States},
year = {1999},
month = {9}
}