New instability toward inhomogeneous states of nonequilibrium superconductors

Journal Article · Tue May 01 04:00:00 EDT 1984 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.29.5236· OSTI ID:6714288

Chang, J; Chi, C C

The new instability model of nonequilibrium superconductors recently proposed by Iguchi and Konno is explored to determine whether inhomogeneous superconducting states can be induced by high-energy quasiparticle injection. No superconducting states, whether homogeneous or not, can be found when the quasiparticle injection rate exceeds some critical value. For injection rates below the critical value, in addition to a stable homogeneous solution, a spatially periodic solution does exist but is, however, unstable against small fluctuations. Another model, which uses a more realistic approach to calculate the density of the relaxation phonons, is also presented and examined. This modified model does not predict a stable inhomogeneous solution either. Instead, it predicts a first-order-like transition between two homogeneous nonequilibrium states if the phonon escape time is sufficiently long.

• Research Organization: IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598 and Department of Physics, Wayne State University, Detroit, Michigan 48202
• OSTI ID: 6714288
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 29:9; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656101* -- Solid State Physics-- Superconductivity-- General Theory-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BEAM INJECTION
DOSE RATES
FILMS
HETEROJUNCTIONS
INSTABILITY
JUNCTIONS
PHONONS
QUASI PARTICLES
RESIDENCE HALF-TIME
SEMICONDUCTOR JUNCTIONS
SUPERCONDUCTORS
THIN FILMS