Effects of energy dependence in the quasiparticle density of states on far-infrared absorption in the pseudogap state

Abstract

We derive a relationship between the optical conductivity scattering rate 1/τ(ω) and the electron-boson spectral function α^2F(Ω) valid for the case when the electronic density of states, N(ε), cannot be taken as constant in the vicinity of the Fermi level. This relationship turned out to be useful for analyzing the experimental data in the pseudogap state of cuprate superconductors.

8 pages, RevTeX4, 1 EPS figure; final version published in PRB

References in corpus (4)

• Dynamic Stripes and Resonance in the Superconducting and Normal Phases of YBa2Cu3O6.5 Ortho-II Superconductor
• Extracting the electron--boson spectral function ${\alpha }^2$F($\omega$) from infrared and photoemission data using inverse theory
• The Mysterious Pseudogap in High Temperature Superconductivity, an Infrared View
• Changes in Optical Conductivity due to Readjustments in Electronic Density of States

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