Epitaxial intercalation of the Bi-Sr-Ca-Cu-O superconductor series
X.-D. Xiang, A. Zettl, W. A. Vareka, J. L. Corkill, T. W. Barbee, III, Marvin L. Cohen
DOI 10.1103/PhysRevB.43.11496 · Physical Review B
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Abstract
We have successfully intercalated epitaxial iodine spacers between BiO bilayers of the oxide superconductors Bi2Sr2CuOx (Bi 2:2:0:1), Bi2Sr2CaCu2Ox (Bi 2:2:1:2), and Bi2Sr2Ca2Cu3Ox (Bi 2:2:2:3), thereby forming new c-axis-expanded stage-1 superconducting structures. Although the guest iodine layer expands each BiO bilayer by about 3.6 Å for all three compounds, the materials remain bulk superconductors with transition temperatures Tc as high as 100 K. The respective shifts in Tc upon intercalation of the different materials allow examination of the superconductivity mechanism in terms of the role of interplanar and intraplanar Cu-O coupling.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CuOx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 24 | Pressure not reported | onset |
| IBi2Sr2CuOx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 22 | Pressure not reported | onset |
| Bi2Sr2CaCu2Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | onset |
| IBi2Sr2CaCu2Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 80 | Pressure not reported | onset |
| Bi2Sr2Ca2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 110 | Pressure not reported | onset |
| IBi2Sr2Ca2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 100 | Pressure not reported | onset |
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