Abstract
We present the results of theoretical study of surface state properties in a two-dimensional model for triplet -wave superconductors. We derive boundary conditions for Eilenberger equations at rough interfaces and develop the approach for self-consistent solution for the spatial dependence of - and -wave pair potentials. In the case we demonstrate the robustness of the zero-energy peak in the density of states (DoS) with respect to surface roughness, in contrast to the suppression of such a peak in the case of symmetry. This effect is due to stability of odd-frequency pairing state at the surface with respect to disorder. In the case of the chiral state we demonstrate the appearance of a complex multipeak subgap structure in the spectrum with increasing surface roughness.
3 More- Received 6 June 2014
- Revised 5 August 2014
DOI:https://doi.org/10.1103/PhysRevB.90.064513
©2014 American Physical Society