Optical Conductivity of High Tc Superconductors: From Underdoped to Overdoped
A. V. Puchkov, P. Fournier, T. Timusk, N. N. Kolesnikov
DOI 10.1103/PhysRevLett.77.1853 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We present results of room-temperature reflectivity measurements on overdoped T12201 and on underdoped and overdoped Bi2212 single crystals. The optical conductivity σ(ω) has two distinctly different regimes as a function of doping. While in the underdoped regime the doping-induced changes in σ(ω) can be well described by an increasing density of mobile carriers, in the overdoped regime there is no evidence for such an increase. Our results are not consistent with the usual view on the overdoped regime where reduction of Tc is associated with an increase in the density of mobile charge carriers.
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 |
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 82 | 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. | 60 | 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 |
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Ba1-xKxBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 31 | Pressure not reported | unknown |
| Ba1-xKxBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 28 | Pressure not reported | unknown |
| Ba1-xKxBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 21 | Pressure not reported | unknown |
Similar papers
Phase separation of photogenerated carriers and photoinduced superconductivity in high-Tc materials
similarity 0.97G. Yu et al.
Source status unknown — claims are unverified
Variation of Tc and transport properties with carrier concentration in Y- and Pb-doped Bi-based superconductors
similarity 0.97P. Mandal et al.
Source status unknown — claims are unverified
Long-range Coulomb interactions and the onset of superconductivity in the high-Tc materials
similarity 0.97S. Doniach & M. Inui
Source status unknown — claims are unverified
Optical response of Ba1−xKxBiO3: Evidence for an unusual coupling mechanism of superconductivity
similarity 0.96H. J. Kaufmann et al.
Source status unknown — claims are unverified
Valence bands and electron correlation in the high-Tc superconductors
similarity 0.96J. C. Fuggle et al.
Source status unknown — claims are unverified
Overdoped regime of the high-Tc superconductor HgBa2CuO4+δ and the relation between normal and superconducting carrier densities
similarity 0.96R. Puźniak et al.
Source status unknown — claims are unverified