Kinetic equations in superconductors and the nature and decay rate of a new mode

Journal Article · Fri Feb 01 04:00:00 EST 1980 · Ann. Phys. (N.Y.); (United States)

DOI:https://doi.org/10.1016/0003-4916(80)90216-X· OSTI ID:5457563

Tremblay, A; Patton, B R; Martin, P C

A set of coupled kinetic equations is derived for phonons, quasiparticles, and the gap of a clean superconductor. Well below the transition temperature, these equations yield an approximated conservation law for the sum of twice the number of nonequilibrium phonons with energy larger than twice the gap plus the number of nonequilibrium quasiparticles. This conservation law gives rise to a long-lived mode, whose decay rate is expressed in terms of microscopic scattering processes. A low-temperature quasiparticle pulse, which has been observed in experiments by Hu, Dynes, Narayanamurti, Smith, and Brinkman, is discussed in terms of the theory.

• Research Organization: Physics Department, Massachusetts Institute of Technology, Cambridge, massachusetts 02139
• OSTI ID: 5457563
• Journal Information: Ann. Phys. (N.Y.); (United States), Journal Name: Ann. Phys. (N.Y.); (United States) Vol. 124:2; ISSN APNYA
• Country of Publication: United States
• Language: English

Related Subjects

656101* -- Solid State Physics-- Superconductivity-- General Theory-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOLTZMANN EQUATION
CONSERVATION LAWS
COUPLING
DIFFERENTIAL EQUATIONS
ENERGY GAP
EQUATIONS
KINETIC EQUATIONS
PHONONS
QUASI PARTICLES
RECOMBINATION
SUPERCONDUCTORS