2020/10/14 by Kentaro Tsutsumi, Yuma Hizume, Mitsuaki Kawamura +2 · 1 citation
Physics and Astronomy · #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.102.214515
published as Phys. Rev. B 102, 214515 (2020) · 10 pages, 8 figures
arxiv created 2020/10/14 · arxiv updated 2021/01/04
We study the superconductivity in typical d-band elemental superconductors V and Nb with the recently developed non-empirical computational scheme based on the density functional theory for superconductors. The effect of ferromagnetic fluctuation (paramagnon) on the superconducting transition temperature (T\rm c), which in principle suppress the s-wave superconducting pairing, is quantified without any empirical parameter. We show that the strong paramagnon effect cancels the T\rm c-enhancing effects of the phonon-mediated pairing and dynamical screened Coulomb interaction.