Single superconducting energy scale in the electron-doped cuprate superconductor Pr2−xCexCuO4−δ

I. Diamant; R. L. Greene; Y. Dagan

doi:10.1103/PhysRevB.80.012508

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Single superconducting energy scale in the electron-doped cuprate superconductor Pr2−xCexCuO4−δ

I. Diamant, R. L. Greene, Y. Dagan

DOI 10.1103/PhysRevB.80.012508 · Physical Review B

T1

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Abstract

The tunneling spectra of the electron-doped cuprate Pr2−xCexCuO4−δ as a function of doping and temperature are reported. We find that the superconducting gap, Δ, shows a BCS-type temperature dependence even for extremely low carrier concentrations. Moreover, Δ follows the doping dependence of Tc, in strong contrast with tunneling studies of the hole-doped cuprates. From our results we conclude that there is a single superconducting energy scale in the electron-doped cuprates.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Pr2-xCexCuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	6	Pressure not reported	unknown
YBa2Cu3O6.5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	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