A CONSTANT SELF-CONSISTENT SCATTERING LIFETIME IN SUPERCONDUCTING STRONTIUM RUTHENATE

Pedro L. Contreras E.

doi:10.1590/SciELOPreprints.9200

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Pedro L. Contreras E. Universidad de Los Andes https://orcid.org/0000-0002-3394-1195

DOI:

https://doi.org/10.1590/SciELOPreprints.9200

Keywords:

Constant superconducting lifetime, Strontium ruthenate, Unconventional superconductivity, Ultrasound attenuation, Electronic thermal conductivity, Self-consistent method

Abstract

In this numerical work, we find a self-consistent constant scattering superconducting lifetime for two different values of the disorder parameters, the inverse atomic strength, and the stoichiometric impurity in the triplet paired unconventional super-conductor strontium ruthenate. This finding is relevant for experimentalists given that the expressions for the ultrasound attenuation and the electronic thermal conductivity depend on the superconducting scattering lifetime, and a constant lifetime fits well nonequilibrium experimental data. Henceforth, this work helps experimentalists in their interpretation of the acquired data. Additionally, we encountered tiny imaginary parts of the self-energy that resembles the Miyake-Narikiyo tiny gap out-side the unitary elastic scattering limit, and below the threshold zero gap value of 1.0 meV.

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Author Biography

Pedro L. Contreras E., Universidad de Los Andes

• Venezuelan physicist, with eyes on a remote bilingual lectureship position. • I teach physics using active learning strategies, inquiry learning & PhET simulations. • We do research linking the unconventional superconductivity of alloys with strontium & the non-equilibrium statistical thermodynamics using the elastic scattering cross-section formalism.

Pedro Contreras Associate Professor of Theoretical Solid State Physics, University of the Andes, Mérida, 5101, Venezuela