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

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

2005-05-12

arxiv.org/abs/cond-mat/0505304v2

Phys. Rev. B 72 (2005) 134506

Physics

Condensed Matter

Strongly Correlated Electrons

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

Scientific paper

10.1103/PhysRevB.72.134506

We derive a relationship between the optical conductivity scattering rate 1/\tau(\omega) and the electron-boson spectral function \alpha^2F(\Omega) valid for the case when the electronic density of states, N(\epsilon), 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.

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