Effects of Ni-to-Cu substitution on the properties of the high-T/sub c/superconductor La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4-//sub y/

Journal Article · Thu Mar 31 23:00:00 EST 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.37.5132· OSTI ID:5451752

Kang, W; Schulz, H; Jerome, D; Parkin, S S.P.; Bassat, J M; Odier, P

We report experimental data about the influence of Ni substitution on the properties of the high-T/sub c/ superconductor La/sub 1.85/Sr/sub 0.15/Cu/sub 1-//sub x/Ni/sub x/O/sub 4-//sub y/, 0less than or equal toxless than or equal to0.05. Superconductivity is totally suppressed above x = 0.04 and the Curie law observed at x = 0.05 reveals an effective magnetic moment of 0.7..mu../sub B/ instead of ..sqrt..3 ..mu../sub B/ as for spin (1/2. This result is explained by the existence of a singly occupied and localized Ni(d/sub z//sub =/) level. Possibilities for non-s-wave superconductivity are also discussed in conjunction with our experimental data.

• Research Organization: Laboratoire de Physique des Solides, Universite de Paris--Sud, 91405 Orsay, France
• OSTI ID: 5451752
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:10; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
CERAMICS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY LEVELS
FERMI LEVEL
LANTHANUM COMPOUNDS
MAGNETIC PROPERTIES
NICKEL ADDITIONS
NICKEL ALLOYS
NICKEL COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
STRONTIUM COMPOUNDS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS