Impurities and orbital dependent superconductivity in Sr_2RuO_4

Abstract

There now exists a wealth of experimental evidence that Sr_2RuO_4 is an odd-parity superconductor. Experiments further indicate that among the bands stemming from the Ru {xy,xz,yz} orbitals, the portion of the Fermi surface arising from the xy orbitals exhibits a much larger gap than the portions of the Fermi surface arising from the {xz,yz} orbitals. In this paper the role of impurities on such an orbital dependent superconducting state is examined within the Born approximation. In contrast to expected results for a nodeless p-wave superconductor the unique nature of the superconducting state in Sr_2RuO_4 implies that a low concentration of impurities strongly influences the low temperature behavior.

5 pages 3 figures

References in corpus (5)

• Time-Reversal Symmetry Breaking Superconductivity in Sr2RuO4
• Orbital dependent superconductivity in Sr_2RuO_4
• Vortex lattice structures of Sr${}_2$RuO${}_4$
• Extended Gapless Regions in Disordered d_{x^2-y^2}-Wave Superconductors
• Effect of anisotropic impurity scattering in superconductors

Cited by in corpus (10)

• Interband proximity effect and nodes of superconducting gap in Sr2RuO4
• Unpaired Electrons in the Heavy-Fermion Superconductor CeCoIn_{5}
• Identifying the pairing symmetry in the Sr2RuO4 superconductor
• Feshbach resonances and mesoscopic phase separation near a quantum critical point in multiband FeAs-based superconductors
• On the theory of superconductivity in ferromagnetic superconductors with triplet pairing
• Superconductivity in ferromagnetic metals and in compounds without inversion centre
• Spin waves in a two dimensional p-wave superconductor: Sr${}_2$RuO${}_4$
• Impurity-induced resonant spinon zero modes in Dirac quantum spin-liquids
• Optical conductivity of superconducting Sr_2RuO_4
• Internal Transition of Superconducting State by Impurity Doping with a Jump of Isotope-effect Coefficient in Multiband Superconductors