Spin triplet superconductivity with line nodes in Sr2RuO4

Details Spin triplet superconductivity with line nodes in Sr2RuO4 Spin triplet superconductivity with line nodes in Sr2RuO4

1999-09-22

arxiv.org/abs/cond-mat/9909316v1

Physics

Condensed Matter

Superconductivity

4 pages, no figures

Scientific paper

10.1143/JPSJ.69.336

Several possible odd-parity states are listed up group-theoretically and examined in light of recent experiments on Sr$_2$RuO$_4$. Those include some of the $f$-wave pairing states, ${\mib d}({\mib k})\propto{\hat{\mib z}} k_xk_y(k_x + {\rm i}k_y)$ and ${\hat{\mib z}} (k_x^2-k_y^2)(k_x + {\rm i}k_y)$ and other ${\hat{\mib z}} (k_x + {\rm i}k_y)\cos ck_z$ ($c$ is the $c$-axis lattice constant) as most plausible candidates. These are time-reversal symmetry broken states and have line nodes running either vertically (the former two) or horizontally (the latter), consistent with experiments. Characterizations of these states and other possibilities are given.

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