Low-energy excitations around (π/2, π/2) points in the pseudogap phase of Nd1.85Ce0.15CuO4

A. Koitzsch, Girsh Blumberg, A. Gozar, B. S. Dennis, P. Fournier, R. L. Greene

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Polarized electronic Raman scattering from the Nd1.85Ce0.15CuO4, superconductor at optimal electron doping (Tc = 22 K) reveals the formation of an anisotropic pseudogap below a characteristic temperature T* ≈ 220 K and energy Eg* = 850 cm−1. Below T* a pronounced suppression of the incoherent spectral weight below Eg* = 850 cm−1 in the nodal directions of k space is observed. This is concomitant with the emergence of long-lived excitations in the vicinity of the (± π/2, ± π/2) points that do not contribute to the optical conductivity.

Original languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number18
StatePublished - May 30 2003

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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