2002/09/09 by A. Pimenov, A. V. Pronin, A. Loidl +2
Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #High-pressure geophysics and materials #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.66.212508
published as Phys. Rev. B 66, 212508 (2002) · 4 pages, 4 figures included
arxiv created 2002/09/09 · openalex publication_date 2002/12/31 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate the far-infrared and submillimeter-wave conductivity of electron-doped La_2\ensuremath-xCexCuO4 tilted 1\ifmmode^∘\else\textdegree\fi off from the ab-plane. The effective conductivity measured for this tilt angle reveals an intensive peak in the normal-state at finite frequency (\ensuremathν\ensuremath∼50cm^\ensuremath-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 into a pure Drude-like contribution. A comparative analysis of the mixed and the in-plane spectra allows us to extract the c-axis conductivity which shows a Josephson plasma resonance at \ensuremathν\ensuremath≃11.7cm^\ensuremath-1 in the superconducting state.