Theory of longitudinal sound attenuation in superconductors with paramagnetic impurities

Journal Article · Sun Oct 01 00:00:00 EDT 1978 · Sov. J. Low Temp. Phys. (Engl. Transl.); (United States)

OSTI ID:6328006

Galaiko, V P; Glushchuk, N I

A study is made of the nonequilibrium processes associated with the propagation of a longitudinal sound wave in a superconductor with a low concentration of paramagnetic impurities (..delta..tau>>1, ..delta..tau/sub s/>>1). The longitudinal electric fields produced in this case affect the ''mixing,'' specific to superconductors, of the electron and hole branches of the energy spectrum. The magnetic impurities, oscillating with the lattice, on the one hand, produce a kinetic effect, namely, drag of the normal electrons and slippage of the superconducting condensate, and on the other hand, ensure paramagnetic branch mixing. Moreover, in the superconducting state the momentum transfer from electrons to impurities in collisions proves to be nonzero. The longitudinal sound attenuation calculated by taking these effects into account differs from the results of the BCS method.

• Research Organization: Physicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR
• OSTI ID: 6328006
• Journal Information: Sov. J. Low Temp. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Low Temp. Phys. (Engl. Transl.); (United States) Vol. 4:10; ISSN SJLPD
• Country of Publication: United States
• Language: English

Related Subjects

656102* -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATTENUATION
BCS THEORY
ELECTRIC FIELDS
ELECTRONS
ELEMENTARY PARTICLES
ENERGY SPECTRA
FERMIONS
HOLES
IMPURITIES
LEPTONS
MAGNETISM
MEISSNER-OCHSENFELD EFFECT
PARAMAGNETISM
SOUND WAVES
SPECTRA
SUPERCONDUCTORS