Calculation of x-ray magnetic circular dichroism in Gd

Journal Article · Sun Oct 01 00:00:00 EDT 1995 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.52.10214· OSTI ID:240465

Ankudinov, A; Rehr, J J ^[1]

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1. Department of Physics, University of Washington Seattle, Washington, 98195-1560 (United States)

An approximate theory for x-ray magnetic circular dichroism (XMCD) is presented for the special case of half-filled shells, e.g., Gd. The {ital L}{sub 2} and {ital L}{sub 3} XMCD structure arises primarily from the exchange interaction of the photoelectron and provides a test of various exchange models. The XMCD signal can be interpreted in terms of an effective magnetic scattering amplitude that depends on the spin of the absorber and of the scattering atoms. {ital Ab} {ital initio} curved-wave multiple-scattering calculations for the {ital L}{sub 2} and {ital L}{sub 3} edges of Gd are found to be in satisfactory agreement with experiment.

• DOE Contract Number: FG06-90ER45415
• OSTI ID: 240465
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 14 Vol. 52; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
ELECTRONIC STRUCTURE
FINE STRUCTURE
GADOLINIUM
MAGNETIC CIRCULAR DICHROISM
SCATTERING AMPLITUDES
X RADIATION