Measurements of the magnetic susceptibility above the superconducting transition of YBa2Cu3O7−δ single crystals in the weak magnetic field limit
✍ Scribed by C. Torrón; A. Díaz; J. Jegoudez; A. Pomar; M.V. Ramallo; A. Revcolevschi; J.A. Veira; Félix Vidal
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 854 KB
- Volume
- 212
- Category
- Article
- ISSN
- 0921-4534
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We have determined the superconducting transition in YBazCu30,\_d single crystal by measurements of thermopower. Two transitions were observed.in both the abplane and the c-direction. The high temperature transition may have a close relation to the surface shell of the crystal.
In order to investigate the nature of the superconducting transition of YBa2Cu307, polycrystalline samples with calorimetric transition widths of 0.4 to 0.5 K were selected. Their specific heat was measured with 0.01% resolution and 0.5% accuracy. The models used to analyze the data from To/2 to 2T