Exchange, spin-orbit, and correlation effects in the soft-x-ray magnetic-circular-dichroism spectrum of nickel

Journal Article · Fri Mar 15 00:00:00 EST 1991 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.43.6785· OSTI ID:5764842

Chen, C T; Smith, N V; Sette, F ^[1]

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1. AT T Bell Laboratories, Murray Hill, New Jersey 07974 (US)

A tight-binding analysis of soft-x-ray-absorption and magnetic-circular-dichroism (MCD) spectra on Ni at the 2{ital p}{r arrow}3{ital d} thresholds yields values for the valence spin-orbit parameter and exchange splitting which are, respectively, larger and smaller than the ground-state band-structure values by a factor of {similar to}2. The discrepancies are attributed to core-hole correlation effects. A feature that appears 4 eV above the main white lines, but only in the MCD spectrum, is also attributed to correlation effects.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5764842
• Journal Information: Physical Review, B: Condensed Matter; (USA), Vol. 43:8; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
NICKEL
MAGNETIC CIRCULAR DICHROISM
X-RAY SPECTRA
ABSORPTION SPECTRA
CORRELATIONS
EXCHANGE INTERACTIONS
GROUND STATES
L-S COUPLING
SOFT X RADIATION
COUPLING
DICHROISM
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY LEVELS
INTERACTIONS
INTERMEDIATE COUPLING
IONIZING RADIATIONS
METALS
RADIATIONS
SPECTRA
TRANSITION ELEMENTS
X RADIATION
360104* - Metals & Alloys- Physical Properties