Photoinduced enhancement of superconductivity

Conference · Tue Feb 01 04:00:00 EST 1994 · Journal of Superconductivity; (United States)

OSTI ID:7020685

Lederman, D; Hansen, J; Schuller, I K ^[1]; Osquiguil, E; Bruynseraede, Y ^[2]; Nieva, G; Guimpel, J ^[3]

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1. Univ. of California, La Jolla, CA (United States)
2. Katholieke Universiteit Leuven (Belgium)
3. Centro Atomico Bariloche, Rio Negro (Argentina)

The photoinduced enhancement of superconductivity in RBa[sub 2]Cu[sub 3]O[sub 2] (R = rate earth or yttrium) and Pr[sub y]R[sub 1[minus]y]Ba[sub 2]Cu[sub 3]O[sub x] was explored through temperature-dependent resistivity. Hall coefficient and mobility, and x-ray diffraction measurements. The increases in Tc are enhanced near the metal-insulator transition, although photoinduced changes always exist in oxygen-deficients samples. Several explanations, including intergrain Josephson coupling photoassisted oxygen ordering and the trapping of photogenerated electrons in oxygen vacancies are discussed. 17 refs., 6 figs.

• OSTI ID: 7020685
• Report Number(s): CONF-930710--; CNN: N00014-91J-1438
• Conference Information: Journal Name: Journal of Superconductivity; (United States) Journal Volume: 7:1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CERAMICS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
CUPRATES
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
OXIDES
OXYGEN COMPOUNDS
PHOTOCONDUCTIVITY
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
RARE EARTH COMPOUNDS
SCATTERING
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS