Destruction of surface states of (dzx+idyz)-wave superconductor by surface roughness: Application to Sr2RuO4
Shu-Ichiro Suzuki, Satoshi Ikegaya, Alexander A. Golubov
DOI 10.1103/PhysRevResearch.4.L042020 · Physical Review Research
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Abstract
The fragility of the chiral surface current of the (dzx+idyz)-wave superconductor, a potential candidate for Sr2RuO4 against surface roughness is demonstrated utilizing the quasiclassical Eilenberger theory. Comparing the chiral surface currents of (dzx+idyz)-wave and (px+ipy)-wave pairings, we conclude the chiral current for (dzx+idyz)-wave SC is much more fragile than that for the (px+ipy)-wave one. The difference can be understood in terms of the orbital symmetry of the odd-frequency Cooper pairs arising at the surface. Our results show the (dzx+idyz)-wave scenario can explain the null spontaneous magnetization in Sr2RuO4 experiments.
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 |
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