Electrical properties of high-Tc superconducting single-crystal Eu1Ba2Cu3Oy
Makoto Hikita, Yukimichi Tajima, Akinori Katsui, Yoshikazu Hidaka, Tsunekazu Iwata, Shigeyuki Tsurumi
DOI 10.1103/PhysRevB.36.7199 · Physical Review B
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Abstract
The normal resistivity and Hc2 of single-crystal Eu1Ba2Cu3Oy with Tc=95 K and transition width of 0.25 K were measured. The crystal has orthorhombic and twinning structure with the a and b axes interchanged. Hc2 shows anisotropic characteristics, the ratio of (dHc2dT)Tc between the c axis and the a−b plane is about 4, and Hc2(0) is large, estimated to be 190 T. The Eu1Ba2Cu3Oy behaves as a quasi-two-dimensional superconductor. It is unambiguously evident in the temperature dependence of the normal resistivity that dρdT is anomalously large and that the temperature-dependent curve has a bulge shape.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Eu1Ba2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 95 | Pressure not reported | onset |
| Eu1Ba2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 94.8 | Pressure not reported | midpoint |
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | onset |
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