Superconductivity in a Bi/Ni bilayer

Sung-Po Chao

doi:10.1103/PhysRevB.99.064504

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Superconductivity in a Bi/Ni bilayer

Sung-Po Chao

DOI 10.1103/PhysRevB.99.064504 · Physical Review B

T1

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Abstract

Motivated by the recent observations of possible p-wave superconductivity in a bismuth-nickel (Bi/Ni) bilayer, we explore theoretically the possibilities of realizing p-wave superconductivity in this bilayer. We begin with a literature survey on this system and related materials that have similar superconducting transition temperature. From the survey, the superconducting mechanism in this bilayer system is suggested to be phonon mediated type-II superconductivity. A simple model is proposed to explain why the p-wave-like Andreev reflection signals are likely to be observed in the surface probe, assuming that the strong spin-orbit coupled surface state of Bi thin film is not completely destroyed by the formation of alloys.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi3Ni Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	4	Pressure not reported	unknown
Bi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.00053	Pressure unresolved	unknown
Bi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	5.5	Pressure unresolved	unknown