Optical response of high-$T_c$ cuprates: possible role of scattering rate saturation and in-plane anisotropy

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dc.creatorHussey, N. E.
dc.creatorAlexander, J. C.
dc.creatorCooper, R. A.
dc.date2006-10-27
dc.date.accessioned2026-07-07T08:28:36Z
dc.date.available2026-07-07T08:28:36Z
dc.descriptionWe present a generalized Drude analysis of the in-plane optical conductivity $σ_{ab}$($T$,$ω$) in cuprates taking into account the effects of in-plane anisotropy. A simple ansatz for the scattering rate $Γ$($T$,$ω$), that includes anisotropy, a quadratic frequency dependence and saturation at the Mott-Ioffe-Regel limit, is able to reproduce recent normal state data on an optimally doped cuprate over a wide frequency range. We highlight the potential importance of including anisotropy in the full expression for $σ_{ab}$($T$,$ω$) and challenge previous determinations of $Γ$($ω$) in which anisotropy was neglected and $Γ$($ω$) was indicated to be strictly linear in frequency over a wide frequency range. Possible implications of our findings for understanding thermodynamic properties and self-energy effects in high-$T_c$ cuprates will also be discussed.
dc.description8 pages, 7 figures. To be published in Physical Review B
dc.identifierhttps://arxiv.org/abs/cond-mat/0610763
dc.identifierhttp://arxiv.org/abs/cond-mat/0610763
dc.identifierPhys. Rev. B 74, 214508 (2006)
dc.identifierdoi:10.1103/PhysRevB.74.214508
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/137672
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleOptical response of high-$T_c$ cuprates: possible role of scattering rate saturation and in-plane anisotropy
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