Ultrasound measurements in a copper oxide superconductor have revealed an exotic phase of matter, composed of loops of spontaneous quantum currents, that has hitherto excelled at evading observation. See Letter p.75
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Zaanen, J. in 100 Years of Superconductivity (eds Rogalla, H. & Kes, P. H.) Ch. 2.4, 92–117 (Chapman & Hall, 2011); preprint at http:/arXiv.org/abs/1012.5461.
Shekhter, A. et al. Nature 498, 75–77 (2013).
Fauqué, B. et al. Phys. Rev. Lett. 96, 197001 (2006).
Varma, C. M. Nature 468, 184–185 (2010).
Affleck, I. & Marston, J. B. Phys. Rev. B 37, 3774 (1988).
Varma, C. M. Phys. Rev. B 55, 14554–14580 (1997).
Kaminski, A. et al. Nature 416, 610–613 (2002).
Xia, J. et al. Phys. Rev. Lett. 100, 127002 (2008).
Zaanen, J. Nature 440, 1118–1119 (2006).
Liu, H. Phys. Today 65(6), 68–69 (2012).
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Zaanen, J. The sound of a hidden order. Nature 498, 41–42 (2013). https://doi.org/10.1038/498041a
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