Extended Superconducting Concentration Range Observed in Pr2−xCexCuO4−δ

Matthias Brinkmann; Thomas Rex; Heinrich Bach; Kurt Westerholt

doi:10.1103/PhysRevLett.74.4927

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Extended Superconducting Concentration Range Observed in Pr2−xCexCuO4−δ

Matthias Brinkmann, Thomas Rex, Heinrich Bach, Kurt Westerholt

DOI 10.1103/PhysRevLett.74.4927 · Physical Review Letters

T1

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Abstract

We report magnetic susceptibility, electrical resistivity, and Hall-effect measurements on single crystals from the n-type high- Tc superconducting system Pr2−xCexCuO4−δ. Using an improved reduction technique, we find that bulk superconductivity can be established over the broad Ce concentration range 0.04≤x≤0.17. The new superconducting phase diagram and the systematics of the electronic transport properties resemble those observed in the overdoped concentration range of the p-type high- Tc superconductors.

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.	27	Pressure not reported	onset
Pr2-xCexCuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	20	Pressure not reported	onset
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown