Anomalous surface states at interfaces in p-wave superconductors
S. V. Bakurskiy, A. A. Golubov, M. Yu. Kupriyanov, K. Yada, Y. Tanaka
DOI 10.1103/PhysRevB.90.064513 · Physical Review B
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Abstract
We present the results of theoretical study of surface state properties in a two-dimensional model for triplet p-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 px- and px+ipy-wave pair potentials. In the px 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 dxy 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 px+ipy state we demonstrate the appearance of a complex multipeak subgap structure in the spectrum with increasing surface roughness.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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