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
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