Appearance of correlation effects in U intermetallics

Journal Article · Mon Oct 27 04:00:00 EST 1986 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.57.2215· OSTI ID:7007130

Sarma, D D; Hillebrecht, F U; Speier, W; Mrtensson, N; Koelling, D D

Experimental densities of states of USi/sub 3/ and UIr/sub 3/ obtained by x-ray photoelectron spectroscopy and bremsstrahlung isochromat spectroscopy (BIS) are compared to fully relativistic self-consistent band-structure calculations. Very good agreement is found for USi/sub 3/, whereas the unoccupied states of UIr/sub 3/ exhibit a satellite which cannot be explained by the one-particle calculation. The satellite in BIS of UIr/sub 3/ is attributed to a quasiparticle bound state, and is qualitatively reproduced by a Hubbard model including Coulomb correlation within the narrow 5f band. The importance of our findings with reference to the magnetic properties of U intermetallics as well as pure U metal is discussed.

• Research Organization: Institut fuer Festkoerper-forschung, Kernforschungsanlage, D-5170 Juelich, Federal Republic of Germany
• OSTI ID: 7007130
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 57:17; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACCURACY
ACTINIDE ALLOYS
ACTINIDE COMPOUNDS
ALLOYS
BOUND STATE
BREMSSTRAHLUNG
CORRELATIONS
COULOMB FIELD
DATA
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
ELECTRON CORRELATION
ELECTRON SPECTROSCOPY
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL DENSITY
EXPERIMENTAL DATA
F STATES
FINE STRUCTURE
INFORMATION
INTERMETALLIC COMPOUNDS
IONIZING RADIATIONS
IRIDIUM ALLOYS
NUMERICAL DATA
PHOTOELECTRON SPECTROSCOPY
PLATINUM METAL ALLOYS
QUASI PARTICLES
RADIATIONS
RELATIVISTIC RANGE
SILICIDES
SILICON COMPOUNDS
SPECTROSCOPY
URANIUM ALLOYS
URANIUM COMPOUNDS
URANIUM SILICIDES
X RADIATION