The effect of a twinning plane on the magnetic properties of superconductors

Journal Article · Wed Feb 01 04:00:00 EST 1989 · Superconductivity; (USA)

OSTI ID:6963128

Buzdin, A I; Kuptsov, D A ^[1]

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1. M. V. Lomonosov Moscow State University, Moscow, (USSR)

The effect of the twinning planes on the pinning of the Abrikosov vortices in type-II superconductors with the Ginzburg-Landau parameter {ital k}{much gt}1 is considered. The twinning-plane superconductivity is described in terms of a modified Ginzburg-Landau functional, in which the enhancement of superconducting properties near the twinning plane (TP) is taken into account through the introduction of an additional {delta}-function term. The interaction of a vortex filament with the twinning plane is calculated. An additional attractive force, which is similar to the one in the problem involving the Bean-Livingston surface barrier, is shown to have an effect on the vortex filament if the twinning plane is opaque to electrons. The results obtained by us can explain the anisotropy of vortex pinning which is observed in the periodic twinning structure in high-T{sub c} superconductors.

• OSTI ID: 6963128
• Journal Information: Superconductivity; (USA), Journal Name: Superconductivity; (USA) Vol. 2:2; ISSN SUPRE
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
GINZBURG-LANDAU THEORY
MAGNETIC FLUX
ORDER PARAMETERS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
TWINNING
TYPE-II SUPERCONDUCTORS