Phenomenological model of high-Tc cuprate superconductors including interlayer interactions
Byung Deok Yu, Hanchul Kim, J. Ihm
DOI 10.1103/PhysRevB.45.8007 · Physical Review B
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Abstract
A phenomenological model including interlayer pairing interactions is proposed for high-Tc cuprate superconductors. Modified Eliashberg equations corresponding to the model are derived and numerically solved. The results show that the trends of Tc’s for known high-Tc materials can be described reasonably well by mechanisms including (in addition to the phonon interactions) nonphonon, intralayer- and interlayer-pairing interactions. The calculated gap values (3.6≲2Δ0/kBTc≲4.2) do not deviate significantly from the canonical BCS value of 3.5. This model can be applicable to layer-structured superconductors in general, whether they are high-Tc or low-Tc superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xBaxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | unknown |
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La1.6Sr0.4CaCu2O6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 60 | Pressure not reported | unknown |
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