2018/12/16 by Pedro Contreras, Jose Florez, Rafael Almeida · 1 citation
Physics and Astronomy · #cond-mat.supr-con
published as Revista Mexicana de Fisica 62(5):442,September 2016 · 19 pages, 4 figures
arxiv created 2018/12/16 · arxiv updated 2018/12/18
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\citelup2 and Clifford et. al. \protect\citeclif1 is carried out. It is found that the discontinuity in the elastic constant C66 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.