Session Q40: Metals: Nanoparticles, Compounds and Thermodynamics
11:15 AM–2:03 PM, Wednesday, March 12, 2008
Morial Convention Center Room: 232
Sponsoring Unit:
DCMP
Chair: William H. Butler, University of Alabama
Abstract ID: BAPS.2008.MAR.Q40.8
Abstract: Q40.00008 : Scanning Tunneling Microscopy Atomic Resolution of Uranium Compound
12:39 PM–12:51 PM
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Abstract 
Authors:
Marilyn Hawley
(Los Alamos National Laboratory)
Shao-Ping Chen
(Los Alamos National Laboratory)
Phillip Van Stockum
(Stanford University)
Room temperature ultra-high vacuum scanning tunneling microscopy (STM) atomic resolution imaging has been achieved for the first time on a layered uranium compound, uranium antimony two. High quality single crystals were cleaved in situ then imaged by STM using PtIr tips. Atomic resolution images revealed an in-plane square lattice with an uranium-uranium interatomic spacing consistent with theoretical predictions for the lowest energy cleavage plane. The STM images revealed a number of, as yet, unexplained features suggestive of missing atoms and single atom wide rows of atoms aligned along the two a-lattice parameter directions, which will be discussed in this talk.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2008.MAR.Q40.8