AVS 45th International Symposium
    Surface Science Division Thursday Sessions
       Session SS-ThP

Paper SS-ThP17
Anisotropic Electron Scattering from Point Defects on Graphite at Low Temperature

Thursday, November 5, 1998, 5:30 pm, Room Hall A

Session: Surface Science Division Poster Session
Presenter: K.F. Kelly, Rice University
Authors: K.F. Kelly, Rice University
J.G. Kushmerick, The Pennsylvania State University
H.P. Rust, The Pennsylvania State University
N.J. Halas, Rice University
P.S. Weiss, The Pennsylvania State University
Correspondent: Click to Email
A low temperature ultrahigh vacuum scanning tunneling microscope was used to image threefold symmetric electron scattering from point defects in the graphite surface. Such defects were theoretically predicted,@footnote 1@ but had only previously been observed with C@sub 60@-functionalized tips at room temperature.@footnote 2@ Cryogenic temperatures sharpen the Fermi distribution enabling the observation of electron scattering. The energy dependence of the scattering was mapped by spectroscopic imaging and acquiring complete current-voltage curves at specific positions with respect to the scattering center. @FootnoteText@ @footnote 1@H. A. Mizes and J. S. Foster, Science 244, 559 (1989). @footnote 2@K. F. Kelly, D. Sarkar, G. D. Hale, N. J. Halas, Science 273, 1371 (1996).