Anisotropic (triplet) superconductivity in UPt/sub 3/ (invited)

Journal Article · Mon Apr 15 04:00:00 EST 1985 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.335213· OSTI ID:5814864

Batlogg, B; Bishop, D J; Bucher, E; Varma, C M; Fisk, Z; Smith, J L

Ultrasound experiments were performed on single crystals of the heavy Fermion superconductor UPt/sub 3/. From the ultrasound attenuation below T/sub c/, a quasiparticle density of states linear in energy is deduced, which we interpret as due to an anisotropic polar-like (triplet) superconducting state. This is further supported by the agreement of the only fitting parameter ..delta../sub 0//kT/sub c/ with the theoretical value for polar p-wave pairing. The attenuation in the normal state gives the electron-phonon interaction strength and the product of the deformation potential times the effective mass is found to be the same as for ordinary ''light'' Fermion systems. The observed variations of the sound velocity are discussed.

• Research Organization: ATandT Bell Laboratories, Murray Hill, New Jersey 07974
• OSTI ID: 5814864
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 57:8; ISSN JAPIA
• 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
ACOUSTIC TESTING
ACTINIDE COMPOUNDS
ANISOTROPY
ATTENUATION
EFFECTIVE MASS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
ENERGY-LEVEL DENSITY
MASS
MATERIALS TESTING
NONDESTRUCTIVE TESTING
PHYSICAL PROPERTIES
PLATINUM COMPOUNDS
SOUND WAVES
SUPERCONDUCTIVITY
TESTING
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
ULTRASONIC TESTING
ULTRASONIC WAVES
URANIUM COMPOUNDS
WAVE PROPAGATION