Electronic band-structure hybridization in the heavy-fermion superconductor UPt/sub 3/

Journal Article · Sun Dec 15 00:00:00 EST 1985 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.32.7646· OSTI ID:6218075

Albers, R C

Many physical properties, such as electrical resistivity and specific heat, of UPt/sub 3/ are different from the other two heavy-fermion superconductors, UBe/sub 13/ and CeCu/sub 2/Si/sub 2/. The electronic structure of UPt/sub 3/ also differs from the other two materials because of the presence of the platinum d band, which is close in energy to the uranium 5f band that is responsible for the exotic heavy-fermion ground state. In this paper various contributions to linear muffin-tin orbital atomic-sphere approximation electronic band-structure calculations are examined to show that platinum p hybridization is the dominant platinum hybridization mediating the formation of the uranium 5f band. The main effect of uranium 5f and platinum 5d hybridization is instead to induce platinum d character at the Fermi energy that would otherwise be absent, while having little effect on the uranium 5f band itself. Any experiment, such as soft-x-ray emission, resonant photoemission, or nuclear magnetic resonance that can probe this platinum d character could yield an important confirmation of itinerant uranium f electrons.

• Research Organization: Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 6218075
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 32:12
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PLATINUM ALLOYS
ELECTRONIC STRUCTURE
URANIUM ALLOYS
D STATES
EMISSION
EXCHANGE INTERACTIONS
F STATES
HYBRIDIZATION
MUFFIN-TIN POTENTIAL
NUCLEAR MAGNETIC RESONANCE
PHOTOEMISSION
RESONANCE
X RADIATION
ACTINIDE ALLOYS
ALLOYS
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
INTERACTIONS
IONIZING RADIATIONS
MAGNETIC RESONANCE
PLATINUM METAL ALLOYS
POTENTIALS
RADIATIONS
SECONDARY EMISSION
360104* - Metals & Alloys- Physical Properties