Observation of a low-temperature resonance peak in ultrasonic attenuation of UPt/sub 3/

Journal Article · Mon Jan 20 04:00:00 EST 1986 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.56.248· OSTI ID:6243173

Mueller, V; Maurer, D; de Groot, K; Bucher, E; Boemmel, H E

We report measurements of the temperature dependence of the ultrasonic attenuation in normal-state UPt/sub 3/. At about 12 K a pronounced longitudinal absorption peak is observed. Such a peak does not appear for transverse-acoustic waves. Our experimental results can be well explained by a narrow resonance in the quasiparticle excitation spectrum near the Fermi energy and are consistent with the enhanced specific-heat coefficient.

• Research Organization: Institut fur Atom- und Festkoerperphysik, Freie Universitat Berlin, D-1000 Berlin 33, Federal Republic of Germany
• OSTI ID: 6243173
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 56:3; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ACTINIDE ALLOYS
ALLOYS
ATTENUATION
DATA
ENERGY-LEVEL DENSITY
EXPERIMENTAL DATA
INFORMATION
INTERMETALLIC COMPOUNDS
NUMERICAL DATA
PHYSICAL PROPERTIES
PLATINUM ALLOYS
PLATINUM METAL ALLOYS
RESONANCE ABSORPTION
SOUND WAVES
SPECIFIC HEAT
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THEORETICAL DATA
THERMODYNAMIC PROPERTIES
ULTRALOW TEMPERATURE
ULTRASONIC WAVES
URANIUM ALLOYS