Loss and Decoherence at the Quantum Hall-Superconductor Interface
Lingfei Zhao, Zubair Iftikhar, Trevyn F. Q. Larson, Ethan G. Arnault, Kenji Watanabe, Takashi Taniguchi, François Amet, Gleb Finkelstein
DOI 10.1103/PhysRevLett.131.176604 · Physical Review Letters
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Abstract
We perform a systematic study of Andreev conversion at the interface between a superconductor and graphene in the quantum Hall (QH) regime. We find that the probability of Andreev conversion from electrons to holes follows an unexpected but clear trend: the dependencies on temperature and magnetic field are nearly decoupled. We discuss these trends and the role of the superconducting vortices, whose normal cores could both absorb and dephase the individual electrons in a QH edge. Our Letter may pave the road to engineering a future generation of hybrid devices for exploiting superconductivity proximity in chiral channels.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Mo-Re Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10 | Pressure not reported | unknown |
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