Tunneling conductance of the (d+ip)-wave superconductor

Yuhi Takabatake; Shu-Ichiro Suzuki; Yukio Tanaka

doi:10.1103/PhysRevB.103.184515

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Tunneling conductance of the (d+ip)-wave superconductor

Yuhi Takabatake, Shu-Ichiro Suzuki, Yukio Tanaka

DOI 10.1103/PhysRevB.103.184515 · Physical Review B

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Abstract

We theoretically investigate the tunneling conductance of the (d+ip)-wave superconductor that was recently proposed to be realized at the (110) surface of a high-Tc cuprate superconductor. Utilizing the quasiclassical Eilenberger theory, we obtain the self-consistent pair potentials and the differential conductance of the normal-metal/(d+ip)-wave superconductor junction. We demonstrate that the zero-bias peak of a d-wave superconductor is robust against the spin-triplet p-wave surface subdominant order, even though it is fragile against the spin-singlet s-wave one. Comparing our numerical results with experimental results, we conclude that spin-triplet p-wave surface subdominant order is feasible.