Doping dependence of Tc and its related isotope effect in high-temperature superconductors
A. Bussmann-Holder, A. R. Bishop, L. Genzel, A. Simon
DOI 10.1103/PhysRevB.55.11751 · Physical Review B
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Abstract
A structure specific four-band model Hamiltonian is used to investigate the various doping dependences of the superconducting temperature Tc and the related isotope effect for YBa2Cu3O7 (YBCO). The model considers explicitly multiphonon-mediated attractive electron (hole) pairing which acts intra- and interband and yields a complicated three-dimensional gap structure. The doping dependence of Tc is calculated by varying the band specific density of states, and from this the corresponding isotope effect is evaluated. Consistent agreement with experimental results is obtained and predictions with respect to site selective doping (including the isotope effect) are given.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 94.1 | Pressure not reported | unknown |
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