Zinc substitution effects on the superconducting properties of Nd{sub 1.85}Ce{sub 0.15}CuO{sub 4-{delta}}

Conference · Mon Dec 31 04:00:00 EST 1990

OSTI ID:10138011

Garcia-Vazquez, V; Mazumdar, S; Falco, C M; Barlingay, C; Risbud, S H

With the discovery of the electron superconductors, a new dimension was added to research in the field of high-temperature superconductivity. Studies of these materials should help elucidate the mechanism responsible for high-temperature superconductivity, as well as improve strategies for finding new superconductors. In this paper, we discuss the superconducting structural properties of Nd{sub 1.85}Ce{sub 0.15}(Cu{sub 1-y}Zn{sub y})O{sub 4} as a function of the Zn concentration y. Detailed comparisons with previous results of similar substitution studies in the single-CuO{sub 2}-layer hole superconductor La{sub 1.85}Sr{sub 0.15}CuO{sub 4} also are made. We have found that the non-magnetic element Zn has a detrimental effect on the T{prime}-phase electron superconductor, and that this effect is as strong as in the T-phase hole superconductor. Theoretical implications and the question of electron-hole symmetry are also discussed.

• Research Organization: Arizona Univ., Tucson, AZ (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-87ER45297
• OSTI ID: 10138011
• Report Number(s): DOE/ER/45297--28; CONF-901291--3; ON: DE92011461
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204
360207
CERIUM OXIDES
COPPER OXIDES
ELECTRIC CONDUCTIVITY
HIGH-TC SUPERCONDUCTORS
LATTICE PARAMETERS
NEODYMIUM OXIDES
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY
TRANSITION TEMPERATURE
X-RAY DIFFRACTION
ZINC OXIDES