Magnetic dichroism in core-level x-ray photoemission with unpolarized excitation

A. Fanelsa; R. Schellenberg; F. U. Hillebrecht; E. Kisker; J. G. Menchero; A. P. Kaduwela; C. S. Fadley; M. A. Van Hove

doi:10.1103/PhysRevB.54.17962

Magnetic dichroism in core-level x-ray photoemission with unpolarized excitation

A. Fanelsa, R. Schellenberg, F. U. Hillebrecht, E. Kisker, J. G. Menchero, A. P. Kaduwela, C. S. Fadley, and M. A. Van Hove

Phys. Rev. B 54, 17962 – Published 15 December 1996

Abstract

Magnetic dichroism has been observed in the angular distributions of Fe $2 p$ photoemission spectra excited from Fe(001) by unpolarized 1.25-keV x rays. The dichroism varies strongly around each low-index forward-scattering direction in the crystal, exhibiting an antisymmetry with emission direction and binding energy that is centered on each forward scattering peak. Photoelectron diffraction theory provides a quantitative explanation for these unpolarized dichroism effects, which should also be generally useful in surface magnetism studies.

Received 8 July 1996

DOI:https://doi.org/10.1103/PhysRevB.54.17962

Authors & Affiliations

A. Fanelsa, R. Schellenberg, F. U. Hillebrecht, and E. Kisker

Institut für Angewandte Physik, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany

J. G. Menchero

Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 and Department of Physics, University of California-Berkeley, Berkeley, California 94720

A. P. Kaduwela and C. S. Fadley

Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 and Department of Physics, University of California-Davis, Davis, California 95616

M. A. Van Hove

Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720

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Vol. 54, Iss. 24 — 15 December 1996

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