Effect of insulating pairing of electrons on the magnetic properties of superconductors

Journal Article · Sun Apr 01 04:00:00 EST 1979 · Sov. Phys. - Solid State (Engl. Transl.); (United States)

OSTI ID:5770932

Kopaev, Y V; Molotkov, S N

The Ginzburg--Landau equation is derived from a microscopic theory for systems with Cooper and electron--hole pairing. Two limiting cases are considered: T/sub c/very-much-less-thanT/sub D/ and T/sub c/approx. =T/sub D/ (T/sub c/ and T/sub D/ are the superconducting and metal--insulator transition temperatures). In the former case, the existence of an insulating order parameter in a superconducting system leads to a renormalization of the coefficients in the Ginzburg--Landau equation for the superconducting gap and field. In the latter case, a system of closed equations is derived for the superconductor and insulator order parameters and for the vector potential. The solutions of such equations are discussed for the simplest case. It is found that new classes of solution can occur. For example, oscillatory damping of the field is one of the possible solutions. The presence of two order parameters in the system leads also to a renormalization of the critical value of the parameter kappa/sub S/ in the Ginzburg--Landau theory.

• Research Organization: P. N. Lebedev Physics Institute, Academy of Sciences of the USSR, Moscow
• OSTI ID: 5770932
• Journal Information: Sov. Phys. - Solid State (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 21:4; ISSN SPSSA
• 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
COOPER PAIRS
CRITICAL TEMPERATURE
GINZBURG-LANDAU THEORY
MAGNETIC PROPERTIES
ORDER PARAMETERS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE