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arXiv · 1809.04156

$d$-wave and $s^\pm$ Pairing Strengths in Ba$_2$CuO$_{3+δ}$

Thomas A. Maier·Tom Berlijn·Doug J. Scalapino
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Abstract

Using a first principles derived two-orbital model ($d_{x^2-y^2}$, $d_{3z^2-r^2}$) and a random phase approximation treatment of the spin-fluctuation pairing vertex, we calculate the $d$-wave and $s^\pm$-wave pairing strengths for a model of the recently discovered Ba$_2$CuO$_{3+δ}$ superconductor. We find that there is significant pairing strength in both of these channels. These results provide an interesting perspective on the relationship between the cuprates and Fe-based superconductors and the high-$T_c$ pairing mechanism.

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Thomas A. Maier, Tom Berlijn, Doug J. Scalapino. 2018-09-11. $d$-wave and $s^\pm$ Pairing Strengths in Ba$_2$CuO$_{3+δ}$. https://doi.org/10.1103/physrevb.99.224515

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