Magnetic Field Dependence of the Critical Currents in Bi2Sr2CaCu2O8/Bi2Sr2CuO6 Multilayers: An Approach to an Ideal Two Dimensional Superconductor
S. Labdi, S. F. Kim, Z. Z. Li, S. Megtert, H. Raffy, O. Laborde, P. Monceau
DOI 10.1103/PhysRevLett.79.1381 · Physical Review Letters
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Abstract
Angular magnetic field dependence of the critical currents of (Bi2Sr2CaCu2O8)m/(Bi2Sr2CuO6)n multilayers has been investigated, m and n being the numbers of c-axis half unit cells of each phase in one layer. In the limiting case of 15 Å thick 2212 layers and 24 Å thick 2201 layers per multilayer unit m=1,n=2, we have achieved a superconducting system where JcH is independent of a magnetic field H≤20T parallel to the layers. We demonstrate that this system behaves like an ideal 2D superconductor.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 81 | Pressure unresolved | unknown |
| Bi2Sr2CuO6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5 | Pressure unresolved | unknown |
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