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Superconductors

Time-reversal symmetry breaking?

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Abstract

Arising from: Kaminski, A. et al. Nature 416, 610–613 (2002); Kaminaski et al. reply One of the mysteries of modern condensed-matter physics is the nature of the pseudogap state of the superconducting cuprates. Kaminski et al.1 claim to have observed signatures of time-reversal symmetry breaking in the pseudogap regime in underdoped Bi2Sr2CaCu2O8+δ (Bi2212). Here we argue that the observed circular dichroism is due to the 5×1 superstructure replica of the electronic bands and therefore cannot be considered as evidence for spontaneous time-reversal symmetry breaking in cuprates.

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Figure 1: Features of superstructure in superconducting cuprates.

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References

  1. Kaminski, A. et al. Nature 416, 610–613 (2002).

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  2. Borisenko, S. V. et al. Phys. Rev. Lett. 92, 207001 (2004).

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  4. Kaminski, A. et al. Preprint at 〈http://arXiv.org/cond-mat/0306140〉 (2003).

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Authors and Affiliations

  1. Institute for Solid State Research, IFW-Dresden, Dresden, 01171

    Sergey V. Borisenko, Alexander A. Kordyuk, Andreas Koitzsch, Martin Knupfer & Jörg Fink

  2. Germany,

    Sergey V. Borisenko, Alexander A. Kordyuk, Andreas Koitzsch, Martin Knupfer & Jörg Fink

  3. Institute of Metal Physics, Kyiv, 03142, Ukraine

    Alexander A. Kordyuk

  4. Institute of Physics of Complex Matter, EPFL, Lausanne, 1015, Switzerland

    Helmuth Berger

  5. Max-Planck Institute for Solid State Research, Stuttgart, 70569, Germany

    Chengtian T. Lin

Authors
  1. Sergey V. Borisenko
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  2. Alexander A. Kordyuk
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  3. Andreas Koitzsch
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  4. Martin Knupfer
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  5. Jörg Fink
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  6. Helmuth Berger
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  7. Chengtian T. Lin
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Correspondence to Sergey V. Borisenko.

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Borisenko, S., Kordyuk, A., Koitzsch, A. et al. Time-reversal symmetry breaking?. Nature 431, 1–2 (2004). https://doi.org/10.1038/nature02931

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