ULTRASONIC ATTENUATION IN SUPERCONDUCTORS FOR ql/lt/ 1

Journal Article · Thu Aug 15 04:00:00 EDT 1963 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.131.1497· OSTI ID:4671902

Levy, M

A derivation is given for the attenuation of both transverse and longitudinal ultrasonic waves in the superconducting state for the case when the product of the ultrasonic wave vector times the electron mean free path is smaller than one. It is assumed that the effect of electromagnetic fields is negligible in this frequency range. For transverse waves it is found that the ratio of the ultrasonic attenuation coefficient in the superconducting state and the normal state is equal to twice the Fermi function of the temperaturedependent superconducting energy gap, in agreement with experimental results obtained by Levy, Kagiwada, and Rudnick. The same result is obtained for longitudinal waves. (auth)

• Research Organization: Univ. of California, Los Angeles
• NSA Number: NSA-17-031203
• OSTI ID: 4671902
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 131; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
DIFFUSION LENGTH
ELECTROMAGNETIC FIELDS
ELECTRONS
ENERGY LEVELS
EQUATIONS
FREQUENCY
PHYSICS
SUPERCONDUCTIVITY
ULTRASONICS