Fermi-level dependence of femtosecond response in nonequilibrium high-Tc superconductors
D. H. Reitze, A. M. Weiner, A. Inam, S. Etemad
DOI 10.1103/PhysRevB.46.14309 · Physical Review B
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Abstract
We have investigated the temperature dependence of the femtosecond optical reflectivity response, ΔR, in the superconducting series PrxY1−xBa2Cu3O7−δ as a function of Pr concentration, x. The sign of ΔR changes with the onset of superconductivity for all samples; in the superconducting state, the sign of ΔR changes as a function of x. Systematic analysis of these results demonstrates that the observed ultrafast optical response does not follow a simple two-fluid model, suggesting that the details of the electronic band structure significantly influence the magnitude and sign of the optical response.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
| Pr0.25Y0.75Ba2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 62 | Pressure not reported | unknown |
| Pr0.1Y0.9Ba2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 81 | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 89 | Pressure not reported | unknown |
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