Year: 2023
Type: article
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: Physical Review Letters
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: Research Triangle Nanotechnology Network, National Science Foundation, U.S. Department of Energy, Duke University, Appalachian State University, Ministry of Education, Culture, Sports, Science and Technology, National Nanotechnology Coordinating Office, Japan Society for the Promotion of Science, Division of Materials Research, Division of Electrical, Communications and Cyber Systems, Basic Energy Sciences, Core Research for Evolutional Science and Technology, Division of Materials Sciences and Engineering
Awards: Interference effects in superconductor-quantum Hall hybrid structures, G2779214953, G2868987701, G3406638862, G3510308925, G369169853, G4091894760, NNCI: North Carolina Research Triangle Nanotechnology Network (RTNN), G4636866504, G4703715196, G5107568500, G5152400447, G7177903685, NEW: SYMMETRIES, INTERACTIONS AND CORRELATION EFFECTS IN CARBON NANOTUBES; PI-GLEB FINKELSTEIN, G8392389417, G8657803787, G8670403042
OpenAlex ID: W4387975864