Imaginary part of the infrared conductivity of a {ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}} superconductor
- Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1 (CANADA)
We give results for the effect of Born and of resonant impurity scattering on the imaginary part of the infrared conductivity {sigma}({Omega}) of a {ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}} superconductor. Inelastic scattering is included in our work through an electron-boson spectral density which also causes the pairing. We emphasize the product of {Omega} times the imaginary past of {sigma}({Omega}). Its zero frequency limit gives the penetration depth, while around twice the gap value it shows smooth behavior as is observed in YBa{sub 2}Cu{sub 3}O{sub 6.95}, which has {ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}} symmetry. This is in sharp contrast to the case of an {ital s}-wave superconductor which would display a sharp characteristic dip at this energy as seen in BaKBiO. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 285965
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 2 Vol. 54; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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