Nonreciprocal transport of superconductivity in a Bi/Ni bilayer
Ranran Cai, Di Yue, Weiliang Qiao, Liangliang Guo, Zidan Chen, X. C. Xie, Xiaofeng Jin, Wei Han
DOI 10.1103/PhysRevB.108.064501 · Physical Review B
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Abstract
Nonreciprocal transport, an exciting quantum physical phenomenon arising from symmetry breaking, can be significantly magnified in the superconducting state. Recent progresses have demonstrated it as a unique probe of the pairing mechanisms in symmetry-breaking superconductors (SCs). Here, we report the nonreciprocal charge transport of the superconductivity in the Bi/Ni bilayer, a p-wave SC candidate. The nonreciprocal transport signal is dramatically enhanced under in-plane magnetic field, but vanishes under perpendicular magnetic field. Interestingly, the nonreciprocal transport is magnified in the temperature regime that can be associated with notable vortex motion. Our results provide compelling evidence for the Rashba superconductivity in the Bi/Ni bilayer with in-plane spin splitting, a precursor for the p-wave SC, which might hold promise for future topological quantum computing applications.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi/Ni Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.8 | Pressure not reported | zero_resistance |
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