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Phys. Rev. Lett. 81, 3271–3274 (1998)

Physics of the Be(101̅ 0) Surface Core Level Spectrum

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S. Lizzit
Sincrotrone Trieste, Trieste, Italy

K. Pohl*
Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996
and Oak Ridge National Laboratories, Oak Ridge, Tennessee 37831

A. Baraldi
Sincrotrone Trieste, Trieste, Italy

G. Comelli
Sincrotrone Trieste, Universit degli Studi di Trieste, Laboratorio TASC-INFM, Trieste, Italy

V. Fritzsche
Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany

E. W. Plummer
Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996
and Oak Ridge National Laboratories, Oak Ridge, Tennessee 37831

R. Stumpf†
Sandia National Laboratories, Albuquerque, New Mexico 87185

Ph. Hofmann‡
Institute for Storage Ring Facilities, University of Aarhus, Aarhus, Denmark
and Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
and Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37831

Received 24 June 1998; published in the issue dated 12 October 1998

Photoelectron diffraction has been utilized to confirm the theoretical prediction that the surface core level shifts observed for Be(101̅ 0) have been improperly assigned. The original assignment based upon the relative intensity of the shifted components was intuitively obvious: the peak with the largest shift of -0.7 eV with respect to the bulk was associated with the surface plane, the next peak shifted by -0.5 eV stems from the second layer, and the third peak at -0.22 eV from the third and fourth layers. First-principles theory and our experimental data show that the largest shift is associated with the second plane, not the first plane.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.3271
DOI:
10.1103/PhysRevLett.81.3271
PACS:
79.60.Bm, 61.14.Qp, 73.20.At

*Present address: Sandia National Labs, Livermore, CA 94550.

†Present address: Motorola, PEL, PO 1663 MS B285, Los Alamos, NM 87545.

‡Author to whom correspondence should be addressed. Fax: +45 86 12 07 40. Email address: philip@dfi.aau.dk

 
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