c-axis optical conductivity in cuprates

Signatures of bilayer splitting in the c-axis optical conductivity of double layer cuprates

We report on the infrared studies of the interlayer response for a series of YBa2Cu3Ox high-Tc superconductors with Pr, Ni, and Zn dopants, as well as for the optimally doped crystals of Bi2Sr2CaCu2Oz . These experimental results have motivated us to reexamine some of the long-standing issues in the interlayer electrodynamics of cuprates. Among them are the origins of the anomalous resonance sp...

Exchange Boson Dynamics in Cuprates: Optical Conductivity ofHgBa2CuO4þ

ofHgBa2CuO4þ J. Yang,* J. Hwang, E. Schachinger, J. P. Carbotte, R. P. S.M. Lobo, D. Colson, A. Forget, and T. Timusk Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1, Canada Institute of Theoretical and Computational Physics, Graz University of Technology, A-8010 Graz, Austria Laboratoire Photons et Matière, CNRS UPR5, LPS-ESPCI, 10 rue Vauquelin, 75231 Paris Cede...

Scaling properties of the optical conductivity of Bi-based cuprates

We present novel infrared optical conductivity data on the three layer high Tc superconductor Bi2Sr2Ca2Cu3O10 at optimal doping. We extend the analysis of an earlier publication, providing a universal scaling function σ(ω, T ) = T−1g(ω/T ) for the optical conductivity. In the present manuscript we obtain a good scaling collapse of the experimental curves on the g(ω/T ) over a wide range of valu...

Nanoscopic stripe-like inhomogeneities and optical conductivity of doped cuprates

We propose a new approach to theoretical description of doped cuprate like La2−xSrxCuO4 and Y Ba2Cu3O6+x, assuming phase separation and treating it as inhomogeneous composite material, containing the dielectric and metallic stripelike nanoparticles. The formalism of effective medium theory is then applied for calculation of dielectric permittivity, optical and EELS spectra of La2−xSrxCuO4 with ...

c-axis response of single- and double-layered cuprates.