On the peak in the far-infrared conductivity of strongly anisotropic cuprates

Details On the peak in the far-infrared conductivity of strongly anisotropic cuprates On the peak in the far-infrared conductivity of strongly anisotropic cuprates

2002-09-09

arxiv.org/abs/cond-mat/0209218v1

Phys. Rev. B 66, 212508 (2002)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures included

Scientific paper

10.1103/PhysRevB.66.212508

We investigate the far-infrared and submillimeter-wave conductivity of electron-doped La_(2-x)Ce_xCuO_4 tilted 1 degree off from the ab-plane. The effective conductivity measured for this tilt angle reveals an intensive peak at finite frequency (\nu ~ 50 cm{-1}) due to a mixing of the in-plane and out-of-plane responses. The peak disappears for the pure in-plane response and transforms to the Drude-like contribution. Comparative analysis of the mixed and the in-plane contributions allows to extract the c-axis conductivity which shows a Josephson plasma resonance at 11.7 cm{-1} in the superconducting state.

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