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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

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  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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