Fluctuation diamagnetism near surfaces and twinning planes in superconductors

Journal Article · Wed Feb 01 04:00:00 EST 1984 · Sov. Phys. - Solid State (Engl. Transl.); (United States)

OSTI ID:6854884

Burmistrov, S N; Dubovskii, L B

Fluctuations of the magnetic moment and of the specific heat near surfaces and twinning planes in superconductors are studied. Fluctuations near a surface yield an additional contribution to the effect of the usual bulk fluctuations on the diamagnetic moment. Such an additional contribution has a singularity near a temperature T/sub c/3(H), which is higher than the bulk superconducting transition temperature in a magnetic field T/sub c/2(H). Depending on the strength of the magnetic field, the singularity of the additional contribution to the magnetic moment can be either logarithmic (strong fields) or of square-root type (weak fields). Experiments which could reveal the aforementioned anomalous behavior are discussed in detail.

• OSTI ID: 6854884
• Journal Information: Sov. Phys. - Solid State (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 26:2; 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
CRITICAL FIELD
DIAMAGNETISM
DIFFERENTIAL EQUATIONS
EQUATIONS
FLUCTUATIONS
GINZBURG-LANDAU THEORY
MAGNETIC FIELDS
MAGNETIC MOMENTS
MAGNETISM
PARTIAL DIFFERENTIAL EQUATIONS
PHYSICAL PROPERTIES
SCHROEDINGER EQUATION
SINGULARITY
SPECIFIC HEAT
SUPERCONDUCTORS
SURFACES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
TWINNING
VARIATIONS
WAVE EQUATIONS