Flux Superperiods and Periodicity Transitions in Quantum Hall Interferometers

For strongly screened Coulomb interactions, quantum Hall interferometers can operate in a novel regime: the intrinsic energy gap can be larger than the charging energy, and addition of flux quanta can occur without adding quasiparticles. We show that flux superperiods are possible and reconcile thei...

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Published in:Physical review letters 2020-03, Vol.124 (10), p.106805-106805, Article 106805
Main Authors: Rosenow, Bernd, Stern, Ady
Format: Article
Language:English
Subjects:
Chemical potential
Energy gap
Field strength
Flux
Interferometers
Particle density (concentration)
Periodic variations
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description For strongly screened Coulomb interactions, quantum Hall interferometers can operate in a novel regime: the intrinsic energy gap can be larger than the charging energy, and addition of flux quanta can occur without adding quasiparticles. We show that flux superperiods are possible and reconcile their appearance with the Byers-Yang theorem. We explain that the observation of anyonic statistical phases is possible by tuning to the transition from a regime with constant chemical potential to a regime with constant particle density, where a flux superperiod changes to a periodicity with one flux quantum at a critical magnetic field strength.
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects Chemical potential
Energy gap
Field strength
Flux
Interferometers
Particle density (concentration)
Periodic variations
title Flux Superperiods and Periodicity Transitions in Quantum Hall Interferometers
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