Far-infrared absorptivity of UPt/sub 3/

Technical Report · Thu Sep 15 00:00:00 EDT 1988

OSTI ID:6424161

Sulewski, P E; Sievers, A J; Maple, M B; Torikachvili, M S; Smith, J L

The absorptivity of the heavy-fermion compound UPt/sub 3/ is measured from 2 to 1000/cm (0.25-124 meV) at temperatures between 1.2 K and room temperature. Above 50/cm (6.2 meV) the absorptivity is relatively temperature independent, while below that frequency the absorptivity is very temperature-dependent, in accord with the d-c resistivity. By performing a Kramers-Kronig transformation of the data, augmented with recently published results at higher frequencies, the complex conductivity is obtained. The low temperature conductivity may be characterized by free carriers which undergo frequency-dependent scattering and have a concomitant frequency-dependent mass enhancement, lambda(omega, with lambda(0)=65.

• Research Organization: Cornell Univ., Ithaca, NY (USA)
• OSTI ID: 6424161
• Report Number(s): AD-A-202354/7/XAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ABSORPTION SPECTRA
ACTINIDE ALLOYS
ALLOYS
CURRENTS
DIRECT CURRENT
ELECTRIC CURRENTS
INFRARED SPECTRA
INTERMETALLIC COMPOUNDS
LOW TEMPERATURE
MASS
OPTIMIZATION
PLATINUM ALLOYS
PLATINUM METAL ALLOYS
SCATTERING
SPECTRA
URANIUM ALLOYS