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Fermi Surface Mapping Using A Third Generation Light Source

Published online by Cambridge University Press:  15 February 2011

Eli Rotenberg ,
J. D. Denlinger ,
S. D. Kevan ,
K. W. Goodman ,
J. G. Tobin ,
G. J. Mankey  and
K. Subramanian
Eli Rotenberg
Affiliation:
Department of Physics, University of Oregon
J. D. Denlinger
Affiliation:
University of Wisconsin-Milwaukee
S. D. Kevan
Affiliation:
Department of Physics, University of Oregon
K. W. Goodman
Affiliation:
Lawrence Livermore National Laboratory
J. G. Tobin
Affiliation:
Lawrence Livermore National Laboratory
G. J. Mankey
Affiliation:
Department of Physics, Louisiana State University
K. Subramanian
Affiliation:
Department of Physics, Louisiana State University
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Abstract

The electronic states at the Fermi surface determine diverse properties such as magnetism, chemical bonding, and phonon-electron coupling. Using a conventional hemispherical analyzer at the ultraESCA beamline 7.0 of the Advanced Light Source, we have measured Fermi contours of the bulk and surface states of Cu(001) and Ag(001). For bulk states, we used uniform sampling in k-space by varying both the electron takeoff angle as well as the photon energy. Three-dimensional plots (in k-space) of bulk and surface states at the Fermi level can easily be achieved within one or two synchrotron shifts. Surface states, whose momentum is independent of k-perpendicular, are easily mapped if sufficiently dense angular sampling is performed. The states crossing the Fermi level at X in the surface Brillouin Zone of Cu(100) and Ag(100) are presented as examples.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 437: Symposium DD – Applications of Synchrotron Radiation to III , 1996 , 47
Copyright
Copyright © Materials Research Society 1996

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