Abstract
The magnetic field position of the peak of the derivative of the non-resonant microwave absorption in the high temperature superconductor Bi2Sr2CaCu2O8+δ is shown to depend on whether the applied magnetic field is increasing or decreasing. The magnitude of this hysteresis, which is due to flux trapping, differs from that observed in YBa2Cu3O6+x and for the present samples is independent of the maximum field applied. It does depend on whether the sample is cooled below Tc in a magnetic field or in zero field. The temperature dependence of the intensity of the absorption is shown to be consistent with the temperature dependence of the current in a Josephson junction assuming the presence of a superconducting gap obeying a mean field temperature dependence.
Original language | English (US) |
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Pages (from-to) | 231-234 |
Number of pages | 4 |
Journal | Physica C: Superconductivity and its applications |
Volume | 166 |
Issue number | 3-4 |
DOIs | |
State | Published - Mar 15 1990 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering