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Effects of Symmetry on Circular and Linear Magnetic Dichroism in Angle-Resolved Photoemission Spectra of Gd/Y(0001) and Fe-Ni/Cu(001)

Published online by Cambridge University Press:  15 February 2011

K.W. Goodman ,
J.G. Tobin ,
F.O. Schumann ,
R.F. Willis ,
J.W. Gammon ,
D.P. pappas ,
J. Kortright ,
J.D. Denlinger ,
E. Rotenberg  and
A. Warwick
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K.W. Goodman
Affiliation:
Lawrence Livermore National Laboratory, Chemistry & Materials Science, Livermore, CA 94551
J.G. Tobin
Affiliation:
Lawrence Livermore National Laboratory, Chemistry & Materials Science, Livermore, CA 94551
F.O. Schumann
Affiliation:
Pennsylvania State University, Department of Physics, University Park, PA 16802
R.F. Willis
Affiliation:
Pennsylvania State University, Department of Physics, University Park, PA 16802
J.W. Gammon
Affiliation:
Virginia Commonwealth University, Department of Physics, Richmond, VA 23284
D.P. pappas
Affiliation:
Virginia Commonwealth University, Department of Physics, Richmond, VA 23284
J. Kortright
Affiliation:
Lawrence Berkeley National Laboratory, Berkeley, CA 94720
J.D. Denlinger
Affiliation:
Lawrence Berkeley National Laboratory, Berkeley, CA 94720
E. Rotenberg
Affiliation:
Lawrence Berkeley National Laboratory, Berkeley, CA 94720
A. Warwick
Affiliation:
Lawrence Berkeley National Laboratory, Berkeley, CA 94720
N. Smith
Affiliation:
Lawrence Berkeley National Laboratory, Berkeley, CA 94720
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Abstract

We have observed circular and linear magnetic dichroisms in angle-resolved photoemission spectra of 50-monolayer Gd films grown on Y(0001) and 6-monolayer Fe-Ni alloy films grown on Cu(001). The 4/level of Gd and the Fe 3p level of the Fe-Ni alloy were measured. A different geometry was used for the magnetic circular dichroism than was used to measure the magnetic linear dichroism. The geometries were chosen so that the magnetic circular dichroism is predicted to be closely related to the magnetic linear dichroism for four-fold symmetric Fe-Ni/Cu(001) but not for three-fold symmetric Gd-Y(0001). Experimental results are presented.

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References

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