Time-reversal symmetry breaking versus superstructure

S. V. Borisenko; A. A. Kordyuk; A. Koitzsch; M. Knupfer; J. Fink

doi:10.1038/nature02931

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Time-reversal symmetry breaking versus superstructure

S. V. Borisenko·A. A. Kordyuk·A. Koitzsch·M. Knupfer·J. Fink

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Abstract

One of the mysteries of modern condenced-matter physics is the nature of the pseudogap state of the superconducting cuprates. Kaminski et al.1 claimed to have observed signatures of time-reversal symmetry breaking in the pseudogap regime in underdoped Bi2Sr2CaCu2O8+d (Bi2212). Here we argue that the observed dichroism is due to the 5x1 superstructure replica of the electronic bands and therefore cannot be considered as evidence for the spontaneous time-reversal symmetry breaking in cuprates.

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S. V. Borisenko, A. A. Kordyuk, A. Koitzsch, M. Knupfer, J. Fink. 2004-02-09. Time-reversal symmetry breaking versus superstructure. https://doi.org/10.1038/nature02931

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