skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Multiple bonding configurations for Te adsorbed 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). {copyright} {ital 1999} {ital The American Physical Society}

Authors:
 [1]; ;  [2];  [3]
  1. Department of Materials Science and Engineering and Materials Research Center, Northwestern University, Evanston, Illinois 60208 (United States)|[Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201 (United States)
  2. Department of Materials Science and Engineering and Materials Research Center, Northwestern University, Evanston, Illinois 60208 (United States)
  3. Department of Materials Science and Engineering and Materials Research Center, Northwestern University, Evanston, Illinois 60208 (United States)|[Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
Publication Date:
OSTI Identifier:
686554
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter
Additional Journal Information:
Journal Volume: 60; Journal Issue: 12; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ELECTRON DIFFRACTION; GERMANIUM; TELLURIUM; ADSORPTION; BONDING; STRUCTURAL CHEMICAL ANALYSIS; X-RAY DIFFRACTION; STANDING WAVES; THIN FILMS; INTERFACES

Citation Formats

Lyman, P.F., Marasco, D.L., Walko, D.A., and Bedzyk, M.J. Multiple bonding configurations for Te adsorbed 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. Multiple bonding configurations for Te adsorbed on the Ge(001) surface. United States. doi:10.1103/PhysRevB.60.8704.
Lyman, P.F., Marasco, D.L., Walko, D.A., and Bedzyk, M.J. Wed . "Multiple bonding configurations for Te adsorbed on the Ge(001) surface". United States. doi:10.1103/PhysRevB.60.8704.
@article{osti_686554,
title = {Multiple bonding configurations for Te adsorbed on the Ge(001) surface},
author = {Lyman, P.F. and Marasco, D.L. and Walko, D.A. and Bedzyk, M.J.},
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). {copyright} {ital 1999} {ital The American Physical Society}},
doi = {10.1103/PhysRevB.60.8704},
journal = {Physical Review, B: Condensed Matter},
number = 12,
volume = 60,
place = {United States},
year = {1999},
month = {9}
}