Effect of Ce doping on the Cu charge in the electron superconductor Nd2−xCexCuO4
E. E. Alp, S. M. Mini, M. Ramanathan, B. Dabrowski, D. R. Richards, D. G. Hinks
DOI 10.1103/PhysRevB.40.2617 · Physical Review B
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Abstract
We have investigated the effect of Ce doping on the net Cu charge via x-ray absorption spectroscopy at the Cu K and the Ce L3 edges. We conclude that Ce ions add electrons to the CuO2 planes. It is most likely that this additional electron is injected into a band rather than being localized on each Cu site leading to Cu1+. We observe that the amount of electron doping is larger than Ce concentration.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nd1.83Ce0.17CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 24 | Pressure unresolved | unknown |
| Nd1.9Ce0.1CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 24 | Pressure unresolved | unknown |
| Nd1.85Ce0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 24 | Pressure unresolved | unknown |
| Nd1.75Ce0.25CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 24 | Pressure unresolved | unknown |
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