Doping-dependent reduction of the Cu nuclear magnetic resonance intensity in the electron-doped superconductor Pr2−xCexCuO4
G. V. M. Williams, J. Haase
DOI 10.1103/PhysRevB.75.172506 · Physical Review B
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Abstract
Cu63 nuclear magnetic resonance (NMR) measurements on the electron-doped high-temperature superconducting cuprates Pr2−xCexCuO4 reveal a large temperature-dependent reduction in the Cu NMR intensity for x⩽0.125 and below room temperature. Our results show that the previous report of a reduction in the Cu63 NMR intensity in Sr0.9La0.1CuO2 with 0.1 doped electrons per Cu is not specific to this superconductor. Rather, the doping-dependent reduction appears to be intrinsic to the electron-doped superconductors. Our results provide further evidence that there is a symmetry in the electron-doped and hole-doped superconducting phase diagrams where a significant temperature-dependent reduction of the Cu NMR intensity occurs for less than ∼0.13 doped holes or doped electrons per Cu.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pr1.9Ce0.1CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 19 | Pressure not reported | unknown |
| Pr1.875Ce0.125CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 21 | Pressure not reported | unknown |
| Pr1.85Ce0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 23 | Pressure not reported | unknown |
| Pr1.8Ce0.2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 17 | Pressure not reported | unknown |
| Sr0.9La0.1CuO2 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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