Electronic structure and spontaneous internal field around non-magnetic impurities in spin-triplet chiral p-wave superconductors

Abstract

The electronic structure around an impurity in spin triplet p-wave superconductors is studied by the Bogoliubov-de Gennes theory on a tight-binding model, where we have chosen $\sin p_x+\mathrm{i}\sin p_y$-wave or $\sin (p_x+p_y)+\mathrm{i}\sin (-p_x+p_y)$-wave states which are considered to be candidates for the pairing state in Sr${}_2$RuO${}_4$. We calculate the spontaneous current and the local density of states around the impurity and discuss the difference between the two types of pairing. We propose that it is possible to discriminate the two pairing states by studying the spatial dependence of the magnetic field around a pair of impurities.

4 pages, 4 figures

References in corpus (17)

• Time-Reversal Symmetry Breaking Superconductivity in Sr2RuO4
• Spectral Properties of Quasiparticle Excitations Induced by Magnetic Moments in Superconductors
• A polarized neutron-scattering study of the Cooper-pair moment in Sr2RuO4
• Gap Structure of the Spin-Triplet Superconductor Sr2RuO4 Determined from the Field-Orientation Dependence of Specific Heat
• Spin-triplet superconductivity in Sr${}_2$RuO${}_4$ probed by Andreev reflection
• Spin triplet superconductivity with line nodes in Sr2RuO4
• Observation of Andreev Surface Bound States in the 3-K phase Region of Sr_2RuO_4
• Determination of the Superconducting Gap Structure in All Bands of the Spin-Triplet Superconductor Sr2RuO4
• Spin-triplet superconductivity due to antiferromagnetic spin-fluctuation in Sr_2RuO_4
• Josephson current in s-wave superconductor / Sr_2RuO_4 junctions
• Microscopic Identification of the D-vector in Triplet Superconductor Sr_2RuO_4
• Local density of states around a magnetic impurity in high-Tc superconductors based on the t-J model
• Vortex structure in chiral p-wave superconductors
• Josephson interferometer in a ring topology as a symmetry prove of Sr_2RuO_4
• Tunneling properties at the interface between superconducting Sr2RuO4 and a Ru micro-inclusion
• Off-site-repulsion induced Triplet Superconductivity: a possibility of chiral p${}_{x+y}$ pairing in Sr${}_2$RuO${}_4$
• Current patterns and magnetic impurities in time-reversal breaking superconductor

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• Impurity- and Magnetic-field-induced Quasiparticle States in Chiral $p$-wave Superconductors
• Impurity effect as a probe of the paring symmetry in BiS_{2} based superconductors
• Parity Violation in a Single Domain of Spin-Triplet Sr2RuO4 Superconductors
• Topological s-wave pairing superconductivity with spatial inhomogeneity: Mid-gap-state appearance and robustness of superconductivity