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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References
Kaminski, A. et al. Nature 416, 610–613 (2002).
Borisenko, S. V. et al. Phys. Rev. Lett. 92, 207001 (2004).
Armitage, N. P. & Hu, J. Phil. Mag. Lett. 84, 105–107 (2004).
Kaminski, A. et al. Preprint at 〈http://arXiv.org/cond-mat/0306140〉 (2003).
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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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DOI: https://doi.org/10.1038/nature02931
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