Electron tunneling study of the normal and superconducting states of Bi1.7Pb0.3Sr2CaCu2Ox
Qiang Huang, J. F. Zasadzinski, K. E. Gray, J. Z. Liu, H. Claus
DOI 10.1103/PhysRevB.40.9366 · Physical Review B
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Abstract
We report point-contact tunneling into single crystals of Bi1.7Pb0.3Sr2CaCu2Ox. The current-voltage characteristics I(V) are quite symmetrical and very reproducible, exhibit a decreasing conductance at high voltages, and can be fitted with a smeared BCS density of states (DOS). We are necessarily led to conclude that the normal-state conductance, in the absence of parabolic-tunneling-barrier effects, has a peak near the Fermi energy, and we speculate that it could be due to the normal-state DOS of Bi1.7Pb0.3Sr2CaCu2Ox.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi1.7Pb0.3Sr2CaCu2Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 96 | Pressure not reported | onset |
| Bi1.7Pb0.3Sr2CaCu2Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 96 | Pressure not reported | onset |
| Bi2Sr2CaCu2Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Tl2Ba2CaCu2Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| BaxK1-xBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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