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Magnetic Dichroism in Resonant Photoemission and Photoabsorption from Gd Metal

Published online by Cambridge University Press:  15 February 2011

K. Starke ,
G. Van Der Laan ,
Z. Hu ,
E. Arenholz ,
E. Navas ,
A Bauer ,
A. Mühlig ,
C. S- Langeheine ,
E. Weschke  and
J. Goodkoep
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K. Starke
Affiliation:
Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, D-14195 Berlin-Dahlem, Germany, [email protected]
G. Van Der Laan
Affiliation:
Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, D-14195 Berlin-Dahlem, Germany, [email protected]
Z. Hu
Affiliation:
Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, D-14195 Berlin-Dahlem, Germany, [email protected]
E. Arenholz
Affiliation:
Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, D-14195 Berlin-Dahlem, Germany, [email protected]
E. Navas
Affiliation:
Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, D-14195 Berlin-Dahlem, Germany, [email protected]
A Bauer
Affiliation:
Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, D-14195 Berlin-Dahlem, Germany, [email protected]
A. Mühlig
Affiliation:
Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, D-14195 Berlin-Dahlem, Germany, [email protected]
C. S- Langeheine
Affiliation:
Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, D-14195 Berlin-Dahlem, Germany, [email protected]
E. Weschke
Affiliation:
Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, D-14195 Berlin-Dahlem, Germany, [email protected]
J. Goodkoep
Affiliation:
Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, D-14195 Berlin-Dahlem, Germany, [email protected]
N. Brookes
Affiliation:
Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, D-14195 Berlin-Dahlem, Germany, [email protected]
G. Kaindl
Affiliation:
Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, D-14195 Berlin-Dahlem, Germany, [email protected]
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Abstract

We report on the study of MCD in resonant PE, using Gd metal as an example. When the photon energy is changed across the Gd 4d → 4ƒ excitation region, the PE-MCD spectrum varies substantially. Based on atomic-multiplet theory, we present a consistent picture of MCD in resonant 4d → 4ƒ PE and x-ray absorption at the 4d-edge, where all spectral changes can be explained by the angular-momentum of the intermediate absorption state. The present analysis shows: when tuning to a specific line of the 4d x-ray absorption spectrum with a total angular momentum J', only the associate multiplet component is found to resonate. At the ‘giant resonance’, the shape of the MCD-PE signal closely resembles the off-resonance case; this finding is explained within atomic-multiplet theory allowing a straightforward use of MCD in 4d-resonant PE (i) for element-specific analysis of multicomponent magnetic systems with high surface sensitivity and (ii) for surface-domain imaging by PE microscopy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 475: Symposium M – Magnetic Ultrathin Films, Multilayers, and Surfaces – 1997 , 1997 , 371
Copyright
Copyright © Materials Research Society 1997

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References

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