Time-reversal symmetry breaking versus superstructure

Details Time-reversal symmetry breaking versus superstructure Time-reversal symmetry breaking versus superstructure

2004-02-09

arxiv.org/abs/cond-mat/0402251v1

Nature doi:10.1038/nature02931 (2004).

Physics

Condensed Matter

Superconductivity

5 pages, pdf

Scientific paper

10.1038/nature02931

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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