Tunneling in high-temperature superconductors

Journal Article · Mon Oct 31 23:00:00 EST 1988 · Modern Physics Letters B; (USA)

DOI:https://doi.org/10.1142/S0217984988001016· OSTI ID:5147572

Gray, K E ^[1]

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1. Argonne National Lab., IL (USA)

Tunneling measurements are important for investigations of possible new mechanism of superconductivity in the high-temperature superconductors (HTS). The magnitude of the energy gap compared to the transition temperature, is a crucial parameter to distinguish between weak and strong couplings. Its temperature dependence also reveals information about possible theories and mechanisms. With only a few exceptions, tunneling measurements have been of the point-contact type, in which the tunneling tip is also used to clean the surface. In this paper, the tunneling apparatus at Argonne is described in detail, together with a discussion of tests done on conventional superconductors, in a study of an organic superconductor.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5147572
• Journal Information: Modern Physics Letters B; (USA), Journal Name: Modern Physics Letters B; (USA) Vol. 2:10; ISSN 0217-9849; ISSN MPLBE
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH TEMPERATURE
LATTICE PARAMETERS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
TUNNELING
YTTRIUM COMPOUNDS
YTTRIUM OXIDES