Revisitation of superconductivity in K$_2$Cr$_3$As$_3$ based on the sixband model
Abstract
We investigate the pairing symmetry of the newly synthesized quasionedimension K$_2$Cr$_3$As$_3$ superconductor based on the sixband model. We adopt standard randomphaseapproximation to study the HubbardHund model of the system. Our results confirm the conclusions obtained from our previous threeband model: the triplet $p_z$ and $f_{y^33x^2y}$ wave pairings serve as the leading pairing symmetries in the weak and strong Hund's rule coupling regimes, respectively. For physically realistic parameters, the triplet $p_z$wave pairing driven by ferromagnetic fluctuations is the leading pairing symmetry of the system. The consistency between the results of these two models suggests that the obtained $p_z$wave pairing symmetry is physical and modelindependent.
 Publication:

arXiv eprints
 Pub Date:
 December 2015
 arXiv:
 arXiv:1512.00147
 Bibcode:
 2015arXiv151200147Z
 Keywords:

 Condensed Matter  Superconductivity
 EPrint:
 6 pages, 6 figures