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Structure of Cleaved (001) USb2 Single Crystal Surface

Published online by Cambridge University Press:  31 January 2011

Shao-Ping Chen ,
Marilyn Hawley ,
Phil B. Van Stockum ,
Hari C. Manoharan  and
Eric Bauer
Shao-Ping Chen
Affiliation:
[email protected], Los Alamos National Laboratory, Los Alamos, New Mexico, United States
Marilyn Hawley
Affiliation:
[email protected], United States
Phil B. Van Stockum
Affiliation:
[email protected], Stanford University, Department of Physics and Stanford Institute for Materials and Energy Sciences, Stanford, California, United States
Hari C. Manoharan
Affiliation:
[email protected], Stanford University, Department of Physics and Stanford Institute for Materials and Energy Sciences, Stanford, California, United States
Eric Bauer
Affiliation:
[email protected], Los Alamos National Laboratory, Los Alamos, New Mexico, United States
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Abstract

We have achieved what we believe to be the first atomic resolution STM images for a uranium compound taken at room temperature. The a, b, and c lattice parameters in the images confirm that the USb2 crystals cleave on the (001) basal plane as expected. The a and b dimensions were equal, with the atoms arranged in a cubic pattern. Our calculations indicate a symmetric cut between Sb planes to be the most favorable cleavage plane and U atoms to be responsible for most of the DOS measured by STM. Some strange features observed in the STM will be discussed in conjunction with ab initio calculations.

Keywords

scanning tunneling microscopy (STM)surface chemistryelectronic structure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1184: Symposium GG – Electron Crystallography for Materials Research and Quantitive Characterization of Nanostructured Materials , 2009 , 1184-HH02-02
Copyright
Copyright © Materials Research Society 2009

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