Frustrated superconducting junction with tricomponent pairing gap functions
Chao Xu, Wang Yang, Congjun Wu
DOI 10.1103/PhysRevB.108.094509 · Physical Review B
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Abstract
We study a superconducting heterojunction with one side characterized by the unconventional chiral p-wave gap function px±ipy and the other side the conventional s-wave one. Though a relative phase of ±π2 between any two components of gap functions is favored in the junction region, mutual phase differences cannot achieve ±π2 simultaneously, which results in frustration. Based on a Ginzburg-Landau free-energy analysis, the frustrated pattern is determined to be s+iη1[exp(iη2φ/2)px+η3exp(−iη2φ/2)py] with ηj=±1 (j=1,2,3), where φ is the phase difference between the px- and py-wave gap functions. Furthermore, we find that the junction exhibits an anisotropic magnetoelectric effect, manifesting itself as an anisotropic spin magnetization along the edge of the junction.
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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