Susceptibility, resistivity and X-ray diffraction measurements have been performed on single crystals of BiESr2CaCu208+ 8. Very sharp (0.5 K width) superconducting transition temperatures as low as 55 K have been reached in the overdoped part of the phase diagram. Anneals in low oxygen pressures hav
Interlayer coupling in Pb-substituted Bi2Sr2CaCu2O8+δ single crystals
✍ Scribed by L. Winkeler; S. Sadewasser; B. Beschoten; H. Frank; F. Nouvertné; G. Güntherodt
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 379 KB
- Volume
- 265
- Category
- Article
- ISSN
- 0921-4534
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A phase diagram including orthorhombic to pseudo-tetragonal structure change, antiferromagnetic ordering and superconducting transition is presented for Bi2Sr2Cal\_zYzCu?OR~. In the case of substitution for Cu in Bi2Sr2CaCu2084KS, Fe suppresses superconductivity more effectively than Ni.
Josephson tunneling I-V characteristics have been observed in break j unctions of oxygen-annealed Bi2Sr2CaCu2Os (Bi-2212 ) single crystals, with foR. ~ 21.3 mV, and with a sharp quasipartiele edge at 2zt ~ 2 × 20 mV. This demonstrates that low values of the IoR. product, thus far as observed in HTS