Trasverse-ultrasonic-attenuation determination of the energy gap between the normal and superconducting states of zinc

Journal Article · Tue Jun 01 04:00:00 EDT 1976 · Phys. Rev., B; (United States)

DOI:https://doi.org/10.1103/PhysRevB.13.4801· OSTI ID:7364472

Breashears, E H; Cleavelin, C R; Marshall, B J

Transverse-ultrasonic-attenuation measurements have been conducted on a high-purity zinc single crystal in the normal and superconducting states for certain polarizations with propagation parallel to the 0001, 1010, and 1120 directions. The anisotropic superconducting energy gap, total electronic attenuation, and residual electronic attenuation have been determined as a function of frequency in the 10--100-MHz range for these orientations. This study was made to compare the results with those of previous longitudinal-ultrasonic-attenuation measurements by Cleavelin and Marshall which indicated the existence of a highly anisotropic energy gap dependent on the value of ql approx. = 1 in the same zinc crystal. The present results with greater interaction selectivity further indicate this same behavior. (AIP)

• Research Organization: Department of Physics, Texas Tech University, Lubbock, Texas 79409
• OSTI ID: 7364472
• Journal Information: Phys. Rev., B; (United States), Journal Name: Phys. Rev., B; (United States) Vol. 13:11; ISSN PLRBA
• 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
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
ENERGY GAP
ENERGY LEVELS
FERMI LEVEL
IMPURITIES
METALS
PHYSICAL PROPERTIES
SOUND WAVES
SUPERCONDUCTIVITY
ULTRASONIC WAVES
ZINC