Superconductivity in R[sub 2[minus]z]Ce[sub z]CuO[sub 4]-type compounds

Conference · Sun Dec 20 04:00:00 EST 1998 · International Journal of Modern Physics B

OSTI ID:6384371

Blackstead, H A ^[1]; Dow, J D ^[2]; Lehmann, M ^[3]

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1. Univ. of Notre Dame, IN (United States). Physics Dept.
2. Arizona State Univ., Tempe, AZ (United States). Dept. of Physics National High Magnetic Field Lab., Tallahassee, FL (United States)
3. Arizona State Univ., Tempe, AZ (United States). Dept. of Physics

The superconductivity of R[sub 2[minus]z]Ce[sub z]CuO[sub 4] (R214) is discussed and compared with the superconductivity of the 1x1 natural superlattice made of it and various oxide layers, R[sub 2[minus]z]Ce[sub z]Sr[sub 2]Cu[sup 2]MO[sup 10] (R222M10), where R is a tri-valent rare-earth ion and M = Nb, Ta, Ru, or Ti. Using simple models, the authors are able to understand the dependences on rare-earth size of superconductivity, of the ability to fabricate R214, of the onset of weak ferromagnetism and of the onset of crystal distortions. The authors can also understand the dependence of R214 superconductivity on angular momentum quantum number L and the superconductivity of Gd222Nb10 when Gd214 does not superconduct. They predict that the R214 superconductors are p-type and that the superconducting layers in R214 are not the same layers of the crystal structures as in R222Nb10.

• Sponsoring Organization: USA; DOE; NSF; Department of the Army, Washington, DC (United States); USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: FG02-90ER45427
• OSTI ID: 6384371
• Report Number(s): CONF-980291--
• Conference Information: Journal Name: International Journal of Modern Physics B Journal Volume: 12:29-31
• 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
ALKALINE EARTH METAL COMPOUNDS
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FERROMAGNETISM
MAGNETISM
MATHEMATICAL MODELS
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPOUNDS
RUTHENIUM OXIDES
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
TANTALUM COMPOUNDS
TANTALUM OXIDES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS