Published September 1, 1993
| Version v1
Journal article
Pressure dependence of the superconducting transition temperature of superoxygenated La2CuO4+δ
- 1. Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)
- 2. Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)
- 3. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Description
We report the pressure dependence of the superconducting transition temperatures (Tc) of two phases of superoxygenated La2CuO4+δ prepared by both high-pressure and electrochemical charging with oxygen. The results are strikingly different from those observed in La1.85Sr0.15CuO4, which has a similar maximum value for Tc. The results are discussed in the framework of a model in which a positive contribution to the pressure derivative ubiquitous to the copper oxide superconductors is canceled to varying degree by a negative derivative due to charge transfer associated with oxygen mobility which depends upon the temperature at which the pressure is applied
Additional details
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter
- Journal Volume
- 48
- Journal Issue
- 9
- Journal Page Range
- p. 6506-6508.
- ISSN
- 0163-1829
- CODEN
- PRBMDO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25002280
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CHARGE EXCHANGE; COPPER OXIDES; HIGH PRESSURE; HIGH-TC SUPERCONDUCTORS; LANTHANUM OXIDES; MEDIUM PRESSURE; PRESSURE DEPENDENCE; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE; VERY HIGH PRESSURE
- Descriptors DEC
- CHALCOGENIDES; COPPER COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; LANTHANUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS