Destruction of superconductivity in Nd2−xCexCuO4−δ thin films by ion irradiation
S. I. Woods, A. S. Katz, M. C. de Andrade, J. Herrmann, M. B. Maple, R. C. Dynes
DOI 10.1103/PhysRevB.58.8800 · Physical Review B
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Abstract
We have measured the resistivity and Hall coefficient of Nd2−xCexCuO4−δ (NCCO) thin films sequentially damaged by ion irradiation. The Tc of the NCCO decreases linearly with residual resistivity and extrapolates to zero at R□/(unitcell)≈5−10 kΩ, results similar to Y-Ba-Cu-O. We suggest that the physical basis for this behavior in NCCO may be disorder effects in a homogeneous two-dimensional superconductor. Unusual behavior of the Hall coefficient gives further evidence that NCCO may be a two-carrier conductor.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nd2-xCexCuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | midpoint |
| YBa2Cu3O7-δ 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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