Coupling strengths and flux pinning in oxide superconductors
Abstract
Muon spin relaxation measurements have been performed to obtain penetration depth versus temperature for several high-temperature oxide superconductors. Comparison with theoretical results based on the Eliashberg equations indicates that at 1 kOe the (RE)Ba2Cu3O7 materials (data for RE=Gd, Er, and Eu) are in the very strong coupling, extremely dirty limit, while data at 5 kOe for Bi2CaSr2Cu2O8 and Tl2Ca2Ba2Cu3O10 follow the strong coupling, clean limit curve.
- Publication:
-
Applied Physics Letters
- Pub Date:
- June 1989
- DOI:
- Bibcode:
- 1989ApPhL..54.2361L
- Keywords:
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- Copper Oxides;
- Coupled Modes;
- Flux Pinning;
- High Temperature Superconductors;
- Mixed Oxides;
- Muon Spin Rotation;
- Current Density;
- Transition Temperature;
- Solid-State Physics