Destruction of superconductivity in the Bi2Sr2Ca1−xGdxCu2−yLiyO8+d system
B. Jayaram, P. C. Lanchester, M. T. Weller
DOI 10.1103/PhysRevB.43.10589 · Physical Review B
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Abstract
We have measured the Tc, resistivity, and magnetoresistivity of a series of Bi2Sr2Ca1−xGdxCu2−yLiyO8+d samples, with x=0 and 0.4 and 0≤y≤0.6. We find that the suppression of Tc, the logarithmic variation of the resistivity above the superconducting transition, and the field-independent nature of the temperature variation of magnetoresistivity illustrate the enhancement of the Coulomb interaction with increasing normal-state resistivity (ρn). We also find a gradual crossover from a logarithmic to an exponential dependence with increasing ρn.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2Ca0.6Gd0.4Cu1.96Li0.04O8+d Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | midpoint |
| Bi2Sr2Ca0.6Gd0.4Cu1.85Li0.15O8+d Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | midpoint |
| Bi2Sr2Ca0.6Gd0.4Cu1.8Li0.2O8+d Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | midpoint |
| Bi2Sr2Ca0.6Gd0.4Cu1.7Li0.3O8+d Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | midpoint |
| Bi2Sr2Ca0.6Gd0.4Cu1.88Li0.12O8+d Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | midpoint |
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