Abstract
We report first-principles calculations of the superconducting properties of within the fully anisotropic Migdal-Eliashberg formalism. We find a single anisotropic superconducting gap of -wave symmetry which varies in magnitude on the different regions of the Fermi surface. The calculated superconducting energy gap on the Fermi surface, the superconducting transition temperature, the specific heat, and the quasiparticle density of states are in good agreement with the corresponding experimental results and support the view that is a phonon-mediated single-anisotropic-gap superconductor.
- Received 14 October 2016
- Revised 15 December 2016
DOI:https://doi.org/10.1103/PhysRevB.95.014512
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