Giant superconducting anisotropy in Bi2Sr2Ca1Cu2O8+δ
D. E. Farrell, S. Bonham, J. Foster, Y. C. Chang, P. Z. Jiang, K. G. Vandervoort, D. J. Lam, V. G. Kogan
DOI 10.1103/PhysRevLett.63.782 · Physical Review Letters
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Abstract
Using torque magnetometry, the superconducting anisotropy of a single crystal of Bi2Sr2Ca1Cu2O8+δ has been measured in the temperature range 77.5<T<83 K (Tc=85 K). The data provide direct experimental evidence for a giant anisotropy. A London analysis provides an excellent description of the results and establishes a temperature-independent value of 3×103 for the superconducting effective-mass anisotropy.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2Ca1Cu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 85 | Pressure not reported | unknown |
| Bi2Sr2Ca1Cu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 85 | Pressure not reported | unknown |
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