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Condensed-matter physics (communication arising)

Spurious magnetism in high-Tc superconductor

Nature volume 426, pages 139–140 (2003)Cite this article

Abstract

One challenge in condensed-matter physics is to unravel the interplay between magnetism and superconductivity in copper oxides with a high critical temperature (Tc). Kang et al.1 claim to have revealed a quantum phase transition from the superconducting to an antiferromagnetic state in the electron-doped material Nd2−xCexCuO4 (NCCO) based on the observation of magnetic-field-induced neutron-scattering intensity at (1/2,1/2,0), (1/2,0,0) and related reflections. Here we argue that the observed magnetic intensity is due to a secondary phase of (Nd,Ce)2O3. We therefore contend that the effect is spurious and not intrinsic to superconducting NCCO.

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Figure 1: Field and temperature dependence of magnetic scattering.

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References

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Authors and Affiliations

  1. Department of Applied Physics, Stanford University, Stanford, California, 94305, USA

    P. K. Mang & M. Greven

  2. Department of Physics, Stanford University, Stanford, California, 94305, USA

    S. Larochelle

  3. Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California, 94305, USA

    M. Greven

Authors
  1. P. K. Mang
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  2. S. Larochelle
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  3. M. Greven
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Correspondence to M. Greven.

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Mang, P., Larochelle, S. & Greven, M. Spurious magnetism in high-Tc superconductor. Nature 426, 139–140 (2003). https://doi.org/10.1038/426139b

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