Electronic structure of Bi2Sr2CaCu2 O8 high-Tc superconductors
Frank Herman, Robert V. Kasowski, William Y. Hsu
DOI 10.1103/PhysRevB.38.204 · Physical Review B
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Abstract
We compare the energy-band structure of the Tc=85 K phase of Bi2Sr2CaCu2 O8 with that of nonsuperconducting La2SrCu2O6, which has an analogous double-perovskite structure but lacks the Bi-O intergrowths. We also compare the band structures of two alternate Bi2Sr2CaCu2 O8 crystal structures to illustrate the consequences of rearranging the O atoms in the Bi-O intergrowth region. Finally, we discuss the effects of Bi-O intergrowths, modulated Bi-O layers, and changes in the number of CuO2 layers on the band structure and on superconductivity.
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. | 85 | Pressure not reported | unknown |
| Bi2Sr2Ca2Cu3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 110 | Pressure not reported | unknown |
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