Evolution of the Pseudogap State of High- Tc Superconductors with Doping
A. V. Puchkov, P. Fournier, D. N. Basov, T. Timusk, A. Kapitulnik, N. N. Kolesnikov
DOI 10.1103/PhysRevLett.77.3212 · Physical Review Letters
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Abstract
We report on a study of the infrared properties of Bi2Sr2CaCu2O8+δ, Bi1.66Pb0.34Sr2CaCu2O8+δ, and Tl2Ba2CuO6+δ crystals at doping levels from underdoped to strongly overdoped. We calculate the frequency-dependent scattering rate 1/τ(ω,T) and study its doping dependence. While we observe a normal-state gaplike depression in 1/τ(ω,T) in the underdoped regime, it is not observed in the overdoped regime. While the high-frequency 1/τ(ω,T) is temperature independent in the underdoped regime, it scales with temperature in the overdoped regime.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 67 | Pressure not reported | unknown |
| Bi1.66Pb0.34Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 70 | Pressure not reported | unknown |
| Tl2Ba2CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
| Tl2Ba2CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 23 | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu4O8 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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