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Reconstruction of the 3-D Atomic Structure of CoSi2 (111) by Photoelectron Holography

Published online by Cambridge University Press:  15 February 2011

Y. Zhoul ,
X. Chen ,
J. C. Campuzano ,
G. Jennings ,
K. Gofron ,
H. Ding  and
D. K. Saldin
Y. Zhoul
Affiliation:
Department of Physics, University of Illinois at Chicago, 801 W. Taylor St., Chicago, IL 60607–7059 Materials Science Division, Argonne National Laboratory. 9700 S. Cass Av., Argonne, IL 60439
X. Chen
Affiliation:
Materials Science Division, Argonne National Laboratory. 9700 S. Cass Av., Argonne, IL 60439
J. C. Campuzano
Affiliation:
Department of Physics, University of Illinois at Chicago, 801 W. Taylor St., Chicago, IL 60607–7059 Materials Science Division, Argonne National Laboratory. 9700 S. Cass Av., Argonne, IL 60439
G. Jennings
Affiliation:
Materials Science Division, Argonne National Laboratory. 9700 S. Cass Av., Argonne, IL 60439
K. Gofron
Affiliation:
Department of Physics, University of Illinois at Chicago, 801 W. Taylor St., Chicago, IL 60607–7059 Materials Science Division, Argonne National Laboratory. 9700 S. Cass Av., Argonne, IL 60439
H. Ding
Affiliation:
Department of Physics, University of Illinois at Chicago, 801 W. Taylor St., Chicago, IL 60607–7059 Materials Science Division, Argonne National Laboratory. 9700 S. Cass Av., Argonne, IL 60439
D. K. Saldin
Affiliation:
Department of Physics and Laboratory for Surface Studies, University of Wisconsin-Milwaukee
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Abstract

We report the use of photoelectron holography for the study of the atomic geometry of the (111) surface of single crystal CoSi2. We employ as a reference wave the Co 3p core electron emitted with a kinetic energy of 695 eV by absorption of synchrotron radiation. Remarkably sharp images of the nearest Si neighbors of the Co emitter were found using a computer reconstruction algorithm which compensates for the anisotropies of both reference and object waves. Comparison with other reconstruction schemes such as the Helmholtz-Kirchoff (HK) algorithm and the scattered-wave included Fourier transform (SWIFT), demonstrates the necessity of compensating for the reference-wave anisotropy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 307: Symposium L – Applications of Synchrotron Radiation Techniques to Materials Science , 1993 , 279
Copyright
Copyright © Materials Research Society 1993

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References

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