Optical conductivity in high-Tc superconductors
E. J. Nicol, J. P. Carbotte, T. Timusk
DOI 10.1103/PhysRevB.43.473 · Physical Review B
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Abstract
The optical conductivity of a superconductor with arbitrary mean free path is calculated with use of an imaginary-frequency formulation. We obtain good agreement with the results of a recent real-axis formulation and, in most cases, with another imaginary-frequency formulation. Extending the work to a simple version of a recently proposed phenomenological charge-transfer resonance model for the CuO, it is found that in the clean limit the absorption will start at four times the gap (Δ0) while introducing impurities produces absorption starting at twice Δ0. In agreement with experiment, strong coupling effects at higher energies need not be large in this model.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CuO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 100 | Pressure not reported | unknown |
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