Impact of the reduction process on the long-range antiferromagnetism in Nd1.85Ce0.15CuO4

P. Richard, M. Poirier, S. Jandl, and P. Fournier
Phys. Rev. B 72, 184514 – Published 21 November 2005

Abstract

We have performed an ultrasonic study of Nd2xCexCuO4 samples which show frequency-dependent ultrasonic anomalies below 10K in both the C66 elastic moduli and the corresponding attenuation α similar to those observed in the undoped material. While the cerium doping only changes the temperature and magnetic scales over which the anomalies are detected, no anomaly is observed for the reduced and superconducting state of a Nd1.85Ce0.15CuO4 sample. This indicates that the sudden suppression of the Cu2+ long-range three-dimensional antiferromagnetic order following the reduction process favors the emergence of the competing superconducting state.

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  • Received 17 June 2005

DOI:https://doi.org/10.1103/PhysRevB.72.184514

©2005 American Physical Society

Authors & Affiliations

P. Richard1,2,*, M. Poirier1, S. Jandl1, and P. Fournier1

  • 1Regroupement Québécois sur les Matériaux de Pointe, Département de Physique, Université de Sherbrooke, Sherbrooke, Canada J1K 2R1
  • 2Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, USA

  • *Electronic address: richarpi@bc.edu

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Vol. 72, Iss. 18 — 1 November 2005

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