Electron tunneling and transport in the high-Tc superconductor Y1−xPrxBa2Cu3O7−δ
A. G. Sun, L. M. Paulius, D. A. Gajewski, M. B. Maple, R. C. Dynes
DOI 10.1103/PhysRevB.50.3266 · Physical Review B
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Abstract
We have performed tunneling measurements on single crystals of the superconducting cuprate Y1−xPrxBa2Cu3O7−δ. With increasing concentration of Pr, the structure seen in YBa2Cu3O7−δ in the energy region where a gap is expected, becomes even less pronounced (more ‘‘gapless’’) as the Tc is reduced. In the vicinity of the superconductor-insulator transition, in tunnel junctions of demonstrably high quality, this structure becomes very weak. We draw upon a strong analogy between this system and ion beam damaged YBa2Cu3O7−δ to discuss the results.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Y1-xPrxBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | unknown |
| Y1-xPrxBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 63 | Pressure not reported | unknown |
| Y1-xPrxBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 37 | Pressure not reported | unknown |
| Y1-xPrxBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | unknown |
| Y1-xPrxBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 63 | Pressure not reported | unknown |
| Y1-xPrxBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 37 | Pressure not reported | unknown |
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