Giant resistive peak close to the superconducting transition in L2−xCexCuO4 single crystals
M. A. Crusellas, J. Fontcuberta, S. Piñol
DOI 10.1103/PhysRevB.46.14089 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We have measured the magnetoresistivity of some L2−xCexCuO4−y (L=Pr,Nd,Sm) superconducting single crystals along the ab plane and the c axis. For most crystals the resistivity along both directions displays a very sharp rise just below Tc and before the zero-resistance state is reached. This resistance anomaly is quenched by a magnetic field. The effect of the field is more pronounced for H∥c than for H∥(ab). Several possible scenarios to account for the resistance anomaly are discussed. We propose that the resistance peak is a manifestation of a quasireentrant behavior resulting from an intrinsic granularity of these n-type high-temperature superconductors. The relevance of these results and ac susceptibility measurements for the anomalous behavior reported for the upper critical field is discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nd1.85Ce0.15CuO4-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Pr1.85Ce0.15CuO4-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Superconductivity of Pr2−xCexCuO4+δ single crystals with substitution of Ni and Co on the Cu position
similarity 0.94Matthias Brinkmann et al.
Source status unknown — claims are unverified
Role of oxygen in superconductivity of Nd2−xCexCuO4−y studied by x-ray-absorption near-edge structure
similarity 0.93Hiroyuki Oyanagi et al.
Source status unknown — claims are unverified
Reply to ‘‘Comment on ‘Double resistive superconducting transition in Sm2−xCexCuO4−y’ ’’
similarity 0.93E. A. Early et al.
Source status unknown — claims are unverified
Hole superconductivity in the electron-doped superconductor Pr2−xCexCuO4
similarity 0.93Y. Dagan & R. L. Greene
Source status unknown — claims are unverified
Low-temperature magnetic penetration depth in d-wave superconductors: Zero-energy bound state and impurity effects
similarity 0.92Yu. S. Barash et al.
Source status unknown — claims are unverified
Superconductivity and thermoelectric power of Pr1.85Ce0.15CuO4−y
similarity 0.92Sung-Ik Lee et al.
Source status unknown — claims are unverified