# Magnetoelectric Control of Helical Light Emission in a Moiré Chern Magnet

https://mdr.nims.go.jp/datasets/60b8025e-773d-4079-8f6f-c5082d90c433

## File

- [ds5p-763x.pdf](https://mdr.nims.go.jp/filesets/74766421-7fc6-46fe-a0c7-5fdef5635ba9/download) ([Detail](https://mdr.nims.go.jp/filesets/74766421-7fc6-46fe-a0c7-5fdef5635ba9.md))

## Id

60b8025e-773d-4079-8f6f-c5082d90c433

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-04-03T02:07:13.528601Z

## Updated at

2026-04-03T04:00:42.942483Z

## Published at

2026-04-03T07:27:42.051521Z

## Doi



## First published url

https://doi.org/10.1103/ds5p-763x

## Date published

2025-08-27

## Recorded date published

2025-8

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Magnetoelectric Control of Helical Light Emission in a Moiré Chern Magnet
  title_type: original
  lang: en

## Description

- description: 'Magnetoelectric effects and their coupling to light helicity are important
    for both fundamental science and applications in sensing, communication, and data
    storage. Traditional approaches based on conventional magnets require complex
    device architectures, involving separate spin-injection, ferromagnetic, and optically
    active layers. Recently, the emergence of 2D semiconductor moiré superlattices
    with flat Chern bands and strong light-matter interactions has established a simple
    yet powerful platform for exploring the coupling between photon, electron, and
    spin degrees of freedom. Here, we report efficient current control of spontaneous
    ferromagnetism and associated helicity of light emission in moiré MoTe2 bilayer
    – a system which hosts a rich variety of topological phases, including newly discovered
    zero-field fractional Chern insulators. We show that the current control is effective
    over a wide range of doping of the first moiré Chern band, implying the uniformity
    of the Berry curvature distribution over the flat band. By setting the system
    into the anomalous Hall metal phase, a current as small as 10nA is sufficient
    to switch the magnetic order, a substantial improvement over both conventional
    spin torque architectures and other moiré systems. The realized current control
    of ferromagnetism leads to continuous tuning of trion photoluminescence helicity
    from left to right circular via spin/valley Hall torque at zero magnetic field.
    Our results pave the way for topological opto-spintronics based on semiconductors
    with synthetic flat Chern bands. '
  description_type: abstract
  lang: und

## Creator

- name: Eric Anderson
  role: author
- name: Heonjoon Park
  role: author
- name: Kaijie Yang
  role: author
- name: Jiaqi Cai
  role: author
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Liang Fu
  role: author
- name: Ting Cao
  role: author
- name: Di Xiao
  role: author
- name: Xiaodong Xu
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: 'magnetoelectric control
    '
  schema: not_defined
- subject: moiré MoTe2
  schema: not_defined
- subject: 'Chern magnet
    '
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2025-08-27

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review X
  issn: '21603308'
  volume: '15'
  issue: '3'
  article_number: '031057'

## Conference



## Related item



## Funding

- funder_name: U.S. Department of Energy
- funder_name: Office of Science
- identifier: DE-SC0018171
  funder_name: Basic Energy Sciences
- identifier: N000142512047
  funder_name: U.S. Department of Defense
- identifier: DE-SC0012509
  funder_name: U.S. Department of Defense
- identifier: DGE-2140004
  funder_name: National Science Foundation
- identifier: MRSEC DMR-1719797
  funder_name: National Science Foundation
- identifier: 21H05233
  funder_name: Japan Society for the Promotion of Science
- identifier: 23H02052
  funder_name: Japan Society for the Promotion of Science
- identifier: JPMJCR24A5
  funder_name: Core Research for Evolutional Science and Technology
- funder_name: Japan Science and Technology Agency
- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- funder_name: University of Washington
- funder_name: World Premier International Research Center Initiative

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 74766421-7fc6-46fe-a0c7-5fdef5635ba9
  filename: ds5p-763x.pdf
  content_type: application/pdf
  size: 1398309
  md5: e5c02fcfe07a66f121727a8afe70cc37

## Thumbnail

fileset_id: 74766421-7fc6-46fe-a0c7-5fdef5635ba9
filename: ds5p-763x.pdf