301 research outputs found
Pseudogap effects on the c-axis charge dynamics in copper oxide materials
The c-axis charge dynamics of copper oxide materials in the underdoped and
optimally doped regimes has been studied by considering the incoherent
interlayer hopping. It is shown that the c-axis charge dynamics for the chain
copper oxide materials is mainly governed by the scattering from the in-plane
fluctuation, and the c-axis charge dynamics for the no-chain copper oxide
materials is dominated by the scattering from the in-plane fluctuation
incorporating with the interlayer disorder, which would be suppressed when the
holon pseudogap opens at low temperatures and lower doping levels, leading to
the crossovers to the semiconducting-like range in the c-axis resistivity and
the temperature linear to the nonlinear range in the in-plane resistivity.Comment: 21 pages, Revtex, Six figures are include
Charge Dynamics from Copper Oxide Materials
The charge dynamics of the copper oxide materials in the underdoped and
optimal doped regimes is studied within the framework of the fermion-spin
theory. The conductivity spectrum shows the non-Drude behavior at low energies
and unusual midinfrared peak, and the resistivity exhibits a linear behavior in
the temperature, which are consistent with experiments and numerical
simulations.Comment: 10 pages, the figures are not included and can be air-mailed by
reques
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