Weak coupling and anisotropy in the magnetic penetration depth of the high-temperature superconductor Tl2Ca2Ba2Cu3O10+δ
J. R. Thompson, D. K. Christen, H. A. Deeds, Y. C. Kim, J. Brynestad, S. T. Sekula, J. Budai
DOI 10.1103/PhysRevB.41.7293 · Physical Review B
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Abstract
Magnetic penetration depths λ(T) have been determined as a function of temperature T for the high-temperature superconductor Tl2Ca2Ba2Cu3O10+δ. Magnetization measurements were performed on an aligned, composite powder sample (Tc=123 K) with the magnetizing field parallel or perpendicular to the common c axes of the dispersed crystallites. The magnetization in the vortex state was analyzed using the theory of Kogan et al. [Phys. Rev. B 38, 11 958 (1988)] to obtain values for λ. The results were best described by BCS weak-coupling theory in the clean limit, with deduced values λ(0) of 173 and 480 nm for the components of the penetration-depth tensor.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Tl2Ca2Ba2Cu3O10+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 123 | Pressure not reported | onset |
| YBa2Cu3O Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8 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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