Detection of valley polarization in graphene by a superconducting contact

AR Akhmerov, CWJ Beenakker - Physical review letters, 2007 - APS
Because the valleys in the band structure of graphene are related by time-reversal
symmetry, electrons from one valley are reflected as holes from the other valley at the …

Induced superconductivity in high-mobility two-dimensional electron gas in gallium arsenide heterostructures

Z Wan, A Kazakov, MJ Manfra, LN Pfeiffer… - Nature …, 2015 - nature.com
Search for Majorana fermions renewed interest in semiconductor–superconductor
interfaces, while a quest for higher-order non-Abelian excitations demands formation of …

Loss and decoherence at the quantum Hall-superconductor interface

L Zhao, Z Iftikhar, TFQ Larson, EG Arnault… - Physical Review Letters, 2023 - APS
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 …

Signatures of triplet superconductivity in chiral Andreev states

L Arrachea, AL Yeyati, CA Balseiro - Physical Review B, 2024 - APS
We study the behavior of the conductance and the current noise in three-terminal
configurations of edge modes of a quantum Hall system in the ν= 2 filling factor with normal …

Supercurrent-enabled Andreev reflection in a chiral quantum Hall edge state

AB Michelsen, P Recher, B Braunecker… - Physical Review …, 2023 - APS
A chiral quantum Hall (QH) edge state placed in proximity to an s-wave superconductor
experiences induced superconducting correlations. Recent experiments have observed the …

Complex band-structure analysis and topological physics of Majorana nanowires

J Osca, L Serra - The European Physical Journal B, 2019 - Springer
We review applications of complex band structure theory to describe Majorana states in
nanowires and nanowire junctions. The dimensionality of the considered wires is gradually …

Spin-triplet supercurrent carried by quantum Hall edge states through a Josephson junction

JAM Van Ostaay, AR Akhmerov, CWJ Beenakker - Physical Review B …, 2011 - APS
We show that a spin-polarized Landau level in a two-dimensional electron gas can carry a
spin-triplet supercurrent between two spin-singlet superconductors. The supercurrent results …

Inter-Landau-level Andreev Reflection at the Dirac Point in a Graphene Quantum Hall State Coupled to a Superconductor

MR Sahu, X Liu, AK Paul, S Das, P Raychaudhuri… - Physical review …, 2018 - APS
Superconductivity and the quantum Hall effect are distinct states of matter occurring in
apparently incompatible physical conditions. Recent theoretical developments suggest that …

Nonlocal transport measurements in hybrid quantum Hall–superconducting devices

L Zhao, EG Arnault, TFQ Larson, K Watanabe… - Physical Review B, 2024 - APS
There has been a growing interest in hybrid quantum Hall–superconductor devices, driven
by the prospect to realize exotic ground states and excitations with non-Abelian exchange …

Geometrical effects on the downstream conductance in quantum-Hall–superconductor hybrid systems

A David, JS Meyer, M Houzet - Physical Review B, 2023 - APS
We consider a quantum Hall (QH) region in contact with a superconductor (SC), ie, a QH-SC
junction. Due to successive Andreev reflections, the QH-SC interface hosts hybridized …