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Intrinsically s-wave like property of triplet superconductors with spin-orbit coupling

T. Yokoyama·Y. Tanaka·J. Inoue
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Abstract

We have studied a general property of unconventional superconductors with spin-orbit coupling by solving the Bogoliubov-de Gennes equation and found that the two of four eigenfunctions for triplet pairing coincide with those for s-wave pairing when a relation holds between pairing symmetry and spin-orbit coupling, indicative of an intrinsically s-wave like property of triplet superconductors. Applying the result, we have studied the tunneling conductance in normal metal / insulator / unconventional superconductor junctions with a candidate of pairing symmetry of CePt$_3$Si. The effect of Rashba spin-orbit coupling (RSOC) is taken into account. We have found that the RSOC induces a peak at the energy gap like s-wave superconductors in the tunneling spectrum.

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T. Yokoyama, Y. Tanaka, J. Inoue. 2005-10-25. Intrinsically s-wave like property of triplet superconductors with spin-orbit coupling. https://doi.org/10.1103/physrevb.72.220504

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