# Circular terahertz ratchets in a two-dimensionally modulated Dirac system

https://mdr.nims.go.jp/datasets/e3202683-2978-4a38-aa69-ad3fd7e2ee06

## File

- [PhysRevResearch.6.023308.pdf](https://mdr.nims.go.jp/filesets/596c263e-5fa9-44e0-8baf-7d2275111ead/download) ([Detail](https://mdr.nims.go.jp/filesets/596c263e-5fa9-44e0-8baf-7d2275111ead.md))

## Id

e3202683-2978-4a38-aa69-ad3fd7e2ee06

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-18T02:30:18.655164Z

## Updated at

2025-02-23T13:47:08.876993Z

## Published at

2025-02-23T13:47:08.967104Z

## Doi



## First published url

https://doi.org/10.1103/physrevresearch.6.023308

## Date published

2024-06-21

## Recorded date published

2024-6

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Circular terahertz ratchets in a two-dimensionally modulated Dirac system
  title_type: original
  lang: en

## Description

- description: We report on the observation of the circular ratchet effect excited
    by terahertz laser radiation in specially designed two-dimensional metamaterial
    formed by a graphene monolayer deposited on a graphite gate patterned with an
    array of triangular antidots. We show that a periodically driven Dirac fermion
    system with spatial asymmetry transforms the a.c. power into a d.c. current, whose
    direction reverses upon switching the radiation helicity. The circular ratchet
    effect is demonstrated for room temperature and radiation frequency of 2.54 THz.
    It is shown that the ratchet current magnitude can be controllably tuned by the
    patterned and uniform back gate voltages. The results are analyzed in a view of
    the developed microscopical theory considering electronic and plasmonic mechanisms
    of the ratchet current formation.
  description_type: abstract
  lang: und

## Creator

- name: M. Hild
  role: author
- name: I. Yahniuk
  role: author
- name: L. E. Golub
  role: author
- name: J. Amann
  role: author
- name: J. Eroms
  role: author
- name: D. Weiss
  role: author
- name: K. Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: T. Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: S. D. Ganichev
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: Circular ratchet effect
  schema: not_defined
- subject: graphene
  schema: not_defined
- subject: terahertz laser radiation
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review Research
  issn: '26431564'
  volume: '6'
  issue: '2'
  article_number: '023308'

## Conference



## Related item



## Funding

- identifier: '97738'
  funder_name: Volkswagen Foundation
- identifier: 426094608 (ER 612/2-1)
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: '101053716'
  funder_name: European Commission
- identifier: 20H00354
  funder_name: Japan Society for the Promotion of Science
- identifier: 23H02052
  funder_name: Japan Society for the Promotion of Science
- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: 314695032–SFB 1277
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: 448955585 (Ga501/18)
  funder_name: Deutsche Forschungsgemeinschaft

## 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: 596c263e-5fa9-44e0-8baf-7d2275111ead
  filename: PhysRevResearch.6.023308.pdf
  content_type: application/pdf
  size: 4640638
  md5: 0b45b931d528e30f0bdd39c5f0f9c071

## Thumbnail

fileset_id: 596c263e-5fa9-44e0-8baf-7d2275111ead
filename: PhysRevResearch.6.023308.pdf