Measurements of the low-temperature heat capacity of YBa2Cu3O7-yin magnetic fields up to 4.5 T
- 1 January 1988
- journal article
- Published by IOP Publishing in Journal of Physics F: Metal Physics
- Vol. 18 (1) , L9-L16
- https://doi.org/10.1088/0305-4608/18/1/002
Abstract
The heat capacity of several sintered specimens of YBa2Cu3O7-y, the high-temperature superconductor, has been measured from 1.5 to 10 K in magnetic fields up to 4.5 T. Part of the low-temperature anomaly in the heat capacity is ascribed to very small concentrations of localised Cu++ spins. There is a dependence of heat capacity on field which is consistent with a contribution from the electrons in flux-line cores but other features of the results are not yet understood.Keywords
This publication has 20 references indexed in Scilit:
- Strong electron-phonon coupling from thermal conductivity measurements in a YBa2Cu3O7-type superconducting compoundSolid State Communications, 1987
- Tunneling measurements on the high- superconductors andPhysical Review B, 1987
- Resonating–valence-bond theory of phase transitions and superconductivity in-based compoundsPhysical Review Letters, 1987
- Structure of the 100 K Superconductor Ba 2 YCu 3 O 7 between (5 ÷ 300) K by Neutron Powder DiffractionEurophysics Letters, 1987
- The Anisotropic Upper Critical Field of Single Crystal YBa2Cu3OxJapanese Journal of Applied Physics, 1987
- Bulk superconductivity at 91 K in single-phase oxygen-deficient perovskitePhysical Review Letters, 1987
- The Resonating Valence Bond State in La 2 CuO 4 and SuperconductivityScience, 1987
- Possible highT c superconductivity in the Ba?La?Cu?O systemZeitschrift für Physik B Condensed Matter, 1986
- Heat capacity cryostat and novel methods of analysis for small specimens in the 1.5–10 K rangeReview of Scientific Instruments, 1980
- Measurements of the heat capacity of neodymium in the range 2-10K and zero magnetic fieldJournal of Physics F: Metal Physics, 1979