Localizing Fractional Quasiparticles on Graphene Quantum Hall Antidots

S. M. Mills; D. V. Averin; X. Du

doi:10.1103/PhysRevLett.125.227701

Localizing Fractional Quasiparticles on Graphene Quantum Hall Antidots

S. M. Mills
, D. V. Averin
, X. Du

Physics and Astronomy

Stony Brook University

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

We report localization of fractional quantum Hall (QH) quasiparticles on graphene antidots. By studying coherent tunneling through the localized QH edge modes on the antidot, we measured the QH quasiparticle charges to be approximately ±e/3 at fractional fillings of ν=±1/3. The Dirac spectrum in graphene allows large energy scales and robust quasiparticle localization against thermal excitation. The capability of localizing fractional quasiparticles on QH antidots brings promising opportunities for realizing anyon braiding and novel quantum electronics.

Original language	English
Article number	227701
Journal	Physical Review Letters
Volume	125
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.125.227701
State	Published - Nov 24 2020

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10.1103/PhysRevLett.125.227701

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title = "Localizing Fractional Quasiparticles on Graphene Quantum Hall Antidots",

abstract = "We report localization of fractional quantum Hall (QH) quasiparticles on graphene antidots. By studying coherent tunneling through the localized QH edge modes on the antidot, we measured the QH quasiparticle charges to be approximately ±e/3 at fractional fillings of ν=±1/3. The Dirac spectrum in graphene allows large energy scales and robust quasiparticle localization against thermal excitation. The capability of localizing fractional quasiparticles on QH antidots brings promising opportunities for realizing anyon braiding and novel quantum electronics.",

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N2 - We report localization of fractional quantum Hall (QH) quasiparticles on graphene antidots. By studying coherent tunneling through the localized QH edge modes on the antidot, we measured the QH quasiparticle charges to be approximately ±e/3 at fractional fillings of ν=±1/3. The Dirac spectrum in graphene allows large energy scales and robust quasiparticle localization against thermal excitation. The capability of localizing fractional quasiparticles on QH antidots brings promising opportunities for realizing anyon braiding and novel quantum electronics.

AB - We report localization of fractional quantum Hall (QH) quasiparticles on graphene antidots. By studying coherent tunneling through the localized QH edge modes on the antidot, we measured the QH quasiparticle charges to be approximately ±e/3 at fractional fillings of ν=±1/3. The Dirac spectrum in graphene allows large energy scales and robust quasiparticle localization against thermal excitation. The capability of localizing fractional quasiparticles on QH antidots brings promising opportunities for realizing anyon braiding and novel quantum electronics.

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Localizing Fractional Quasiparticles on Graphene Quantum Hall Antidots

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