Impurity effects on the superconducting coherence length in Zn- or Ni-doped YBa2Cu3O6.9 single crystals
K. Tomimoto, I. Terasaki, A. I. Rykov, T. Mimura, S. Tajima
DOI 10.1103/PhysRevB.60.114 · Physical Review B
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Abstract
The superconducting coherence length ξ of Zn- or Ni-doped YBa2Cu3O6.9 single crystals was measured through the diamagnetic susceptibility in the reversible region, and through the resistivity in the mixed state. Upon impurity doping, ξ increases along both the in- and out-of-plane directions, which suggests that the doped impurities act as pair breakers. The in-plane ξ is well explained by the pair-breaking theory of d-wave superconductivity. On the other hand, the increase of the out-of-plane ξ is larger than the theoretical prediction, which might indicate that the interplane coupling of the order parameter is modified by the impurities.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6.9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93 | Pressure not reported | unknown |
| YBa2Cu3O6.9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93 | Pressure not reported | unknown |
| YBa2(Cu0.990Ni0.010)3O6.9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 87 | Pressure not reported | unknown |
| YBa2(Cu0.990Ni0.010)3O6.9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 87 | Pressure not reported | unknown |
| YBa2(Cu0.996Zn0.004)3O6.9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 85 | Pressure not reported | unknown |
| YBa2(Cu0.996Zn0.004)3O6.9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 85 | Pressure not reported | unknown |
| YBa2(Cu0.994Zn0.006)3O6.9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 82 | Pressure not reported | unknown |
| YBa2(Cu0.994Zn0.006)3O6.9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 82 | Pressure not reported | unknown |
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