Structural study of monolayers of Sb on Ge(111) with different surface reconstructions

Journal Article · Fri Jul 01 00:00:00 EDT 1994 · Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States)

DOI:https://doi.org/10.1116/1.579015· OSTI ID:7029384

Kendelewicz, T ^[1]; Woicik, J C ^[2]; Miyano, K E ^[3]; Yoshikawa, S A; Pianetta, P ^[4]; Spicer, W E ^[1]

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1. Stanford Electronics Laboratory, Stanford University, Stanford, California 94305 (United States)
2. National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
3. Department of Physics, Brooklyn College, Brooklyn, New York 11210 (United States)
4. Stanford Synchrotron Radiation Laboratory, Stanford, California 94305 (United States)

X-ray standing waves (XSW) and low energy electron diffraction (LEED) have been applied to the structural study of a monolayer of Sb on cleaved Ge(111). Initial Ge(111) surfaces with 2[times]1, [ital c](2[times]8), and 1[times]1 LEED reconstructions have been obtained by preannealing the 2[times]1 room temperature cleavage surfaces. Although in all three cases, the Sb deposition followed by a 600 [degree]C anneal on these different initial reconstructions results in a 2[times]1 or 2[times]1/2[times]2 overlayer LEED geometry, the XSW data indicate large differences in the local Sb bonding structure between them. For the initial 2[times]1 surface, Sb forms Seiwatz chains. Preannealing of the surface causes a decrease in the Sb coherent fraction and an increase of the substrate overlayer distance which is inconsistent with a single site absorption geometry and indicates large disorder of the 1[times]1 surface prior to the Sb deposition.

• OSTI ID: 7029384
• Journal Information: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States), Journal Name: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States) Vol. 12:4; ISSN 0734-2101; ISSN JVTAD6
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360602 -- Other Materials-- Structure & Phase Studies
ADSORPTION
ANNEALING
ANTIMONY
CHEMICAL BONDS
COHERENT SCATTERING
DIFFRACTION
ELEMENTS
GERMANIUM
HEAT TREATMENTS
METALS
SCATTERING
SORPTION
SORPTIVE PROPERTIES
STANDING WAVES
SURFACE PROPERTIES
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
X-RAY DIFFRACTION