Loss and decoherence at the quantum Hall - superconductor interface
arXiv:2210.04842 · doi:10.1103/PhysRevLett.131.176604
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 study may pave the road to engineering future generation of hybrid devices for exploiting superconductivity proximity in chiral channels.
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Cited by in corpus (16)
- Evidence for chiral supercurrent in quantum Hall Josephson junctions
- Andreev reflection of quantum Hall states through a quantum point contact
- Signatures of triplet superconductivity in nu=2-chiral Andreev states
- SU(4) Symmetry Breaking and Induced Superconductivity in Graphene Quantum Hall Edges
- Non-local transport measurements in hybrid quantum Hall - superconducting devices
- Heat-charge separation in a hybrid superconducting quantum Hall setup
- Andreev Reflection in the Quantum Hall Regime at an Al/InAs Junction on a Cleaved Edge
- Transparent Graphene-Superconductor Interfaces: Quantum Hall and Zero Field Regimes
- Floquet-Nambu theory of electron quantum optics with superconductors
- On-Demand and Tunable Andreev-Conversion of Single-Electron Charge Pulses
- Wigner representation of Andreev-reflected charge pulses
- Thermal properties of the superconductor-quantum Hall interfaces
- Edge optical effect as a probe of chiral topological superconductors
- Vortex Pinning in Niobium covered by a thin polycrystalline Gold
- Revealing Superconducting Chiral Edge Modes via Resistance Distributions
- Quantized Transport of Fractional Quantum Hall Edge with Disordered Superconducting Proximity