# Evidence for correlated electron pairs and triplets in quantum Hall interferometers

https://mdr.nims.go.jp/datasets/c784eb83-c9fd-414a-80ef-f9874dfe40ee

## File

- [s41467-024-54211-3.pdf](https://mdr.nims.go.jp/filesets/77034d17-249e-43bc-ba69-ee3cc0a7f3ae/download) ([Detail](https://mdr.nims.go.jp/filesets/77034d17-249e-43bc-ba69-ee3cc0a7f3ae.md))

## Id

c784eb83-c9fd-414a-80ef-f9874dfe40ee

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-05T01:57:11.565013Z

## Updated at

2025-02-05T03:31:51.477548Z

## Published at

2025-02-05T03:31:51.541384Z

## Doi



## First published url

https://doi.org/10.1038/s41467-024-54211-3

## Date published

2024-11-20

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Evidence for correlated electron pairs and triplets in quantum Hall interferometers
  title_type: original
  lang: en

## Description

- description: The pairing of electrons is ubiquitous in electronic systems featuring
    attractive inter–electron interactions, as exemplified in superconductors. Counter-
    intuitively, it can also be mediated in certain circumstances by the repulsive
    Coulomb interaction alone. Quantum Hall (QH) Fabry–Pérot interferometers (FPIs)
    tailored in a two–dimensional electron gas under a perpendicular magnetic field
    have been argued to exhibit such an unusual electron pairing, seemingly without
    attractive interactions. Here, we show evidence in graphene QH FPIs, revealing
    not only a similar electron pairing at bulk filling factor νB = 2, but also an
    unforeseen emergence of electron tripling characterized by a fractional Aharonov–Bohm
    flux period of h/3e (h is the Planck constant and e the electron charge) at νB
    = 3. Leveraging plunger–gate spectroscopy, we demonstrate that electron pairing
    (tripling) involves correlated charge trans- port on two (three) entangled QH
    edge channels. This spectroscopy indicates a quantum interference flux periodicity
    determined by the sum of the phases acquired by the distinct QH edge channels
    having slightly different interfering areas. Phase jumps observed in the pajama
    maps can be accounted for by the frequency beating between pairing/tripling modes
    and the outer interfer- ing edge.
  description_type: abstract
  lang: und

## Creator

- name: Wenmin Yang
  role: author
- name: David Perconte
  role: author
  orcid: https://orcid.org/0000-0001-7480-8123
- name: Corentin Déprez
  role: author
  orcid: https://orcid.org/0000-0002-6211-0307
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
- name: Sylvain Dumont
  role: author
- name: Edouard Wagner
  role: author
- name: Frédéric Gay
  role: author
- name: Inès Safi
  role: author
  orcid: https://orcid.org/0000-0002-8173-9944
- name: Hermann Sellier
  role: author
  orcid: https://orcid.org/0000-0002-1439-1044
- name: Benjamin Sacépé
  role: author
  orcid: https://orcid.org/0000-0001-5943-9999

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Electron pairing
  schema: not_defined
- subject: quantum Hall
  schema: not_defined
- subject: graphene
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

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## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '15'
  issue: '1'
  article_number: '10064'

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## Fileset

- id: 77034d17-249e-43bc-ba69-ee3cc0a7f3ae
  filename: s41467-024-54211-3.pdf
  content_type: application/pdf
  size: 4147835
  md5: be95d971795e8e04c00f4225d3864037

## Thumbnail

fileset_id: 77034d17-249e-43bc-ba69-ee3cc0a7f3ae
filename: s41467-024-54211-3.pdf