# Photocurrent Spectroscopy of Dark Magnetic Excitons in 2D Multiferroic NiI<sub>2</sub>

https://mdr.nims.go.jp/datasets/b1d70145-1021-47ae-88bb-19bc27210896

## File

- [Advanced Science - 2024 - Lebedev - Photocurrent Spectroscopy of Dark Magnetic Excitons in 2D Multiferroic NiI2.pdf](https://mdr.nims.go.jp/filesets/d997972d-f785-4ffb-b8ff-7137b562ed72/download) ([Detail](https://mdr.nims.go.jp/filesets/d997972d-f785-4ffb-b8ff-7137b562ed72.md))

## Id

b1d70145-1021-47ae-88bb-19bc27210896

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-14T00:43:43.095085Z

## Updated at

2025-02-14T03:31:52.208803Z

## Published at

2025-02-14T03:31:52.298845Z

## Doi



## First published url

https://doi.org/10.1002/advs.202407862

## Date published

2024-08-09

## Recorded date published

2024-10

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Photocurrent Spectroscopy of Dark Magnetic Excitons in 2D Multiferroic NiI<sub>2</sub>
  title_type: original
  lang: en

## Description

- description: Two-dimensional (2D) antiferromagnetic (AFM) semiconductors are promising
    components of opto-spintronic devices due to terahertz operation frequencies and
    minimal interactions with stray fields. However, the lack of net magnetization
    significantly limits the number of experimental techniques available to study
    the relationship between magnetic order and semiconducting properties. Here, they
    demonstrate conditions under which photocurrent spectroscopy can be employed to
    study many-body magnetic excitons in the 2D AFM semiconductor NiI2. The use of
    photocurrent spectroscopy enables the detection of optically dark magnetic excitons
    down to bilayer thickness, revealing a high degree of linear polarization that
    is coupled to the underlying helical AFM order of NiI2. In addition to probing
    the coupling between magnetic order and dark excitons, this work provides strong
    evidence for the multiferroicity of NiI2 down to bilayer thickness, thus demonstrating
    the utility of photocurrent spectroscopy for revealing subtle opto-spintronic
    phenomena in the atomically thin limit.
  description_type: abstract
  lang: und

## Creator

- name: Dmitry Lebedev
  role: author
- name: J. Tyler Gish
  role: author
- name: Ethan S. Garvey
  role: author
- name: Thomas W. Song
  role: author
- name: Qunfei Zhou
  role: author
- name: Luqing Wang
  role: author
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Maria K. Chan
  role: author
- name: Pierre Darancet
  role: author
- name: Nathaniel P. Stern
  role: author
- name: Vinod K. Sangwan
  role: author
- name: Mark C. Hersam
  role: author
  orcid: https://orcid.org/0000-0003-4120-1426

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: 2D antiferromagnetic semiconductors
  schema: not_defined
- subject: photocurrent spectroscopy
  schema: not_defined
- subject: NiI2
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Advanced Science
  issn: '21983844'
  volume: '11'
  issue: '38'
  article_number: '2407862'

## Conference



## Related item



## Funding

- identifier: N00014‐19‐1‐2297
  funder_name: Office of Naval Research
- identifier: DE‐SC0019356
  funder_name: U.S. Department of Energy
- identifier: ECCS‐1542205
  funder_name: National Science Foundation

## 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: d997972d-f785-4ffb-b8ff-7137b562ed72
  filename: Advanced Science - 2024 - Lebedev - Photocurrent Spectroscopy of Dark
    Magnetic Excitons in 2D Multiferroic NiI2.pdf
  content_type: application/pdf
  size: 2238083
  md5: 8ace427c687a1db649157ba452e8e32b

## Thumbnail

fileset_id: d997972d-f785-4ffb-b8ff-7137b562ed72
filename: Advanced Science - 2024 - Lebedev - Photocurrent Spectroscopy of Dark Magnetic
  Excitons in 2D Multiferroic NiI2.pdf