Scaling behavior of conductivity and magnetization in high-temperature superconductors
A. Wahl, V. Hardy, F. Warmont, A. Maignan, M. P. Delamare, Ch. Simon
DOI 10.1103/PhysRevB.55.3929 · Physical Review B
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Abstract
Through magnetization and conductivity measurements, the effect of dimensionality on the superconducting fluctuations has been investigated for Tl2 Ba2 CaCu2 O8 (Tl-2212), YBa2 Cu3 O7 (YBCO), and (Tl,Bi)Si2 CaCu2 O7 (Tl-1212). Our results show that the bilayered thallium compound (i.e., Tl-2212 which is the most anisotropic compound) is clearly two-dimensional (2D) while a 3D-2D crossover is evidenced for Tl-1212 and YBCO. This crossover occurs through an intermediate region between two asymptotic behaviors: 3D near the transition and 2D at higher temperatures.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Tl2Ba2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 103 | Pressure not reported | unknown |
| TlBiSi2CaCu2O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 86 | Pressure not reported | unknown |
| YBa2Cu3O7 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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