Evidence for a nematic component to the Hidden Order parameter in URu2Si2 from differential elastoresistance measurements

Scott C. Riggs; M. C. Shapiro; Akash V. Maharaj; S. Raghu; E. D. Bauer; R. E. Baumbach; P. Giraldo-Gallo; Mark Wartenbe; I. R. Fisher

doi:10.1038/ncomms7425

paper

Evidence for a nematic component to the Hidden Order parameter in URu2Si2 from differential elastoresistance measurements

arXiv:1405.7403 · doi:10.1038/ncomms7425

Abstract

Measurements of the differential elastoresistance of URu $_{2}$ Si $_{2}$ reveal that the fluctuations associated with the 17 K Hidden Order phase transition have a nematic component. Approaching the "Hidden Order" phase transition from above, the nematic susceptibility abruptly changes sign, indicating that while the Hidden Order phase has a nematic component, it breaks additional symmetries.

15 pages, 10 figures

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