Attenuation of ultrasonic shear waves in superconducting aluminium

Journal Article · Mon Apr 01 04:00:00 EST 1963 · Physica

DOI:https://doi.org/10.1016/S0031-8914(63)80295-5· OSTI ID:4672335

David, R.; Van Der Laan, H. R.; Poulis, N. J.

The attenuation of ultrasonic shear waves with frequencies between 2.5 and 25 Mc is measured in two single crystals of superconducting aluminum for different polarization directions. At the transition temperature, a steep but continuous drop of the attenuation is observed. The remaining part of the attenuation fits into the BCS theory. No anisotropy is found for the zero- temperature energy gap, but the shapes of the attenuation vs temperature curves are strongly orientation-dependent. Some measurements are also performed at small magnetic fields.

• Research Organization: Kamerlingh Onnes Laboratorium, Leiden
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-025806
• OSTI ID: 4672335
• Journal Information: Physica, Journal Name: Physica Journal Issue: 4 Vol. 29; ISSN 0031-8914
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINUM
ANISOTROPY
BCS THEORY
DIAGRAMS
DISTRIBUTION
FREQUENCY
MAGNETIC FIELDS
MEASURED VALUES
MONOCRYSTALS
POLARIZATION
SUPERCONDUCTIVITY
TEMPERATURE
TENSILE PROPERTIES
ULTRASONICS
ZONES