Theory of phase transitions in nonequilibrium superconductors with a tunnel injection of quasiparticles

Journal Article · Tue Aug 01 04:00:00 EDT 1978 · Sov. Phys. - Solid State (Engl. Transl.); (United States)

OSTI ID:6518539

Elesin, V F; Levchenko, E B

Nonequilibrium state of a superconductor created by the tunnel injection of quasiparticles is studied. It is shown that the dependence of the superconductor gap on the applied voltage is a many-valued function. In particular, three branches of the dependence ..delta.. (V) can be defined beginning from a critical voltage V/sub c/: the first branch describes a decreasing dependence of ..delta.. on V, the second branch describes an increasing dependence, and the third branch yields ..delta..=0. A many-valued dependence ..delta.. (V) leads to an S-type current--voltage characteristic of a tunnel junction and to the filamentation of the current in the junction, i.e., to stratification into regions with different values of the order parameter.

• Research Organization: Engineering-Physics Institute, Moscow
• OSTI ID: 6518539
• Journal Information: Sov. Phys. - Solid State (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 20:8; ISSN SPSSA
• Country of Publication: United States
• Language: English

Related Subjects

656101* -- Solid State Physics-- Superconductivity-- General Theory-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY GAP
ORDER PARAMETERS
PHYSICAL PROPERTIES
QUASI PARTICLES
SUPERCONDUCTING JUNCTIONS
TUNNEL EFFECT