Ultrasonic attenuation in clean anisotropic superconductors

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5679815

Coppersmith, S N; Klemm, R A

Recently, the ultrasonic attenuation of UPt/sub 3/ in the hydrodynamic regime has been found to be proportional to T/sup 2/ at low temperatures T. In the opposite (clean) limit, ql>>1, we find that the ultrasonic attenuation for an anisotropic superconductor has a temperature dependence that depends not only on the nodal structure of the gap but also on the relative orientation of the sound wave and the nodes. Both power law and exponential temperature dependences are found to be possible for gaps with either points or lines of nodes, depending upon the sound wave orientation relative to the nodes. In some directions, finite experimental rsolution must be taken into account.

• Research Organization: Brookhaven National Lab., Upton, NY (USA); Exxon Research and Engineering Co., Annandale, NJ (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5679815
• Report Number(s): BNL-36528; CONF-8505138-5; ON: DE85012178
• 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 ALLOYS
ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
INTERMETALLIC COMPOUNDS
MATERIALS TESTING
NONDESTRUCTIVE TESTING
PHYSICAL PROPERTIES
PLATINUM ALLOYS
PLATINUM METAL ALLOYS
SOUND WAVES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TESTING
ULTRASONIC TESTING
ULTRASONIC WAVES
URANIUM ALLOYS
WAVE PROPAGATION