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arXiv · 1812.06494

Symmetry Field Breaking Effects in Sr$_2$RuO$_4$

Pedro Contreras·Jose Florez·Rafael Almeida
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Abstract

In this work, after reviewing the theory of the elastic properties of Strontium ruthenate, an extension suitable to explain the sound speed experiments of Lupien et. al. \protect\cite{lup2} and Clifford et. al. \protect\cite{clif1} is carried out. It is found that the discontinuity in the elastic constant C$_{66}$ gives unambiguous experimental evidence that the \sr superconducting order parameter $Ψ$ has two components and shows a broken time-reversal symmetry state. A detailed study of the elastic behavior is performed by means of a phenomenological theory employing the Ginzburg-Landau formalism.

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Pedro Contreras, Jose Florez, Rafael Almeida. 2018-12-16. Symmetry Field Breaking Effects in Sr$_2$RuO$_4$. https://arxiv.org/abs/1812.06494

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