Quasiparticle dynamics and in-plane anisotropy in Y Ba₂ Cu₃ O_y system near onset of superconductivity

2004/08/04 by Y. -S. Lee, Kouji Segawa, Yoichi Ando +1 · 1 citation
Physics and Astronomy · #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.70.014518

published as Phys. Rev. B 70, 014518 (2004) · 5 pages, 4 figures

arxiv created 2004/08/04 · arxiv updated 2009/12/01

Abstract

We report on an infrared study of carrier dynamics within the CuO₂ planes in heavily underdoped detwinned single crystals of YBa₂Cu₃O% _y. In an effort to reveal the electronic structure near the onset of superconductivity, we investigate the strong anisotropy of the electromagnetic response due to an enhancement of the scattering rate along the a-axis. We propose that the origin of this anisotropy is related to a modulation of the electron density within the CuO₂ planes.

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