Impurity Bound States and Symmetry of the Superconducting Order Parameter in Sr_2RuO_4

Details Impurity Bound States and Symmetry of the Superconducting Order Parameter in Sr_2RuO_4 Impurity Bound States and Symmetry of the Superconducting Order Parameter in Sr_2RuO_4

2000-08-06

arxiv.org/abs/cond-mat/0008095v1

Physics

Condensed Matter

Superconductivity

RevTex, 10 pages with 6 eps figures

Scientific paper

10.1103/PhysRevB.62.R11969

Recent experiments on Sr_2RuO_4 have indicated the presence of linear nodes in the superconducting order parameter. Among the possible spin triplet states, 2D p-wave superconductivity with E_u symmetry appears to be inconsistent with the experiments, whereas the 2D f-wave order parameter with B_1g x E_u symmetry turns out to be a more likely candidate. Here it is shown how the quasi-particle bound state wave functions around a single impurity provide a clear signature of the symmetry of the underlying superconducting order parameter.

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