Pressure dependence of T sub c in L sub 2 minus x M sub x CuO sub 4 minus y ( L =Pr,Nd,Sm,Eu; M =Ce,Th): Antisymmetric behavior of electron- versus hole-doped copper-oxide superconductors

• Published in: Physical review letters 1990-01, Vol.64:1
• Main Authors: Markert, J.T., Beille, J., Neumeier, J.J., Early, E.A., Seaman, C.L., Moran, T., Maple, M.B.
• Format: Article
• Language: English
• Subjects: 360204 - Ceramics, Cermets, & Refractories- Physical Properties; ACTINIDE COMPOUNDS; CERIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; COPPER OXIDES; CRYSTAL STRUCTURE; CRYSTALS; DATA; DOPED MATERIALS; ELECTRICAL PROPERTIES; ELECTRONS; ELEMENTARY PARTICLES; EUROPIUM COMPOUNDS; EXPERIMENTAL DATA; FERMIONS; INFORMATION; INHIBITION; INTERFACES; LAYERS; LEPTONS; MATERIALS; MATERIALS SCIENCE; NEODYMIUM COMPOUNDS; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; POLYCRYSTALS; PRASEODYMIUM COMPOUNDS; PRESSURE DEPENDENCE; RARE EARTH COMPOUNDS; SAMARIUM COMPOUNDS; THERMODYNAMIC PROPERTIES; THORIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE; ULTRALOW TEMPERATURE; VERY HIGH PRESSURE; VERY LOW TEMPERATURE
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.64.80

Measurements of the superconducting transition temperature {ital T}{sub {ital c}} in the electron-doped copper-oxide compounds {ital L}{sub 2{minus}{ital x}}M{sub x}CuO{sub 4{minus}{ital y}} under pressure {ital P} to {similar to}20 kbar reveal that, in general, {ital T}{sub {ital c}} decreases with {ital P}, in contrast to the behavior of hole-doped copper-oxide compounds. The quantity {ital d} ln{ital T}{sub {ital c}}/{ital d} ln{ital V} exhibits a dependence on {ital T}{sub {ital c}} similar to that of hole-doped compounds, but opposite in sign, and can be as large as {similar to}24. Correlation of structural and transport properties indicates competition between interlayer and intralayer effects in these materials.