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Low-Temperature Dependence of the Shear Viscosity in Superconductor S r 2 R u O 4

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Abstract

Low-temperature dependence of the shear viscosity components in superconductor S r 2 R u O 4 is investigated within the framework of the Boltzmann equation. We will show that this dissipative viscosity has a power-law temperature dependence as T 2 for the γ band of the Fermi surface with the isotropic gap. Lupien et al. experimentally found that the shear viscosity components of superconductor S r 2 R u O 4 change as T 1.8 at low temperatures. This relative consistency between the temperature dependence for the isotropic gap and experimental results implies that the gap node of S r 2 R u O 4 may be a horizontal line node.

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Acknowledgments

This study was financially supported by the research council of the University of Isfahan, Iran.

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Authors and Affiliations

  1. Department of Physics, Faculty of Sciences, University of Isfahan, 81744, Isfahan, Iran

    M. Yazdani-Hamid, H. Yavari, M. A. Shahzamanian & A. Karimi

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  1. M. Yazdani-Hamid
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  2. H. Yavari
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  3. M. A. Shahzamanian
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  4. A. Karimi
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Correspondence to M. Yazdani-Hamid.

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Yazdani-Hamid, M., Yavari, H., Shahzamanian, M.A. et al. Low-Temperature Dependence of the Shear Viscosity in Superconductor S r 2 R u O 4 . J Supercond Nov Magn 30, 865–869 (2017). https://doi.org/10.1007/s10948-016-3875-6

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