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

preprint2014arXivOpen access

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.

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

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