# Strain CorrelatedLinearly Polarized Photoluminescencein WSe2/WS2 Moiré Superlattices

https://mdr.nims.go.jp/datasets/2b2afbcd-1869-47c0-b4ff-1eece4c600c0

## File

- [2604.16934v4.pdf](https://mdr.nims.go.jp/filesets/955f39c6-fa25-4d63-b05a-dfad621eb571/download) ([Detail](https://mdr.nims.go.jp/filesets/955f39c6-fa25-4d63-b05a-dfad621eb571.md))

## Id

2b2afbcd-1869-47c0-b4ff-1eece4c600c0

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-10-24T07:21:13.180133Z

## Updated at

2026-10-29T00:05:16.715015Z

## Published at

2026-10-29T01:32:24.338532Z

## Doi

https://doi.org/10.48505/nims.8684

## First published url

https://doi.org/10.1021/acs.nanolett.6c02363

## Date published

2026-10-07

## Recorded date published

2026-10-7

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: |-
    Strain Correlated
    Linearly Polarized Photoluminescence
    in WSe2/WS2 Moiré Superlattices
  title_type: original
  lang: en

## Description

- description: 'Reliable optical control of valley degrees of freedom in moiré excitons
    requires that the emitted polarization faithfully reflects the underlying valley
    state. Here, we show that linearly polarized photoluminescence from WSe₂/WS₂ moiré
    excitons is largely insensitive to the excitation linear polarization and therefore
    does not arise from valley coherence. Automated polarization-resolved photoluminescence
    and Raman mapping at cryogenic temperature reveal that the degree of linear polarization
    correlates strongly with local Raman shifts and moiré-exciton observables, identifying
    strain as the dominant experimental correlate. Linear-regression analysis further
    shows that strain-related descriptors provide the best prediction of the observed
    polarization. Guided by theory, we attribute this behavior to strain-amplified
    breaking of C₃ symmetry in the moiré potential: weak uniaxial strain produces
    only partial cancellation of locally elliptical emission, yielding a finite far-field
    degree of linear polarization. These results establish strain as a key control
    parameter for reliable optical readout in TMD moiré superlattices. '
  description_type: abstract
  lang: und

## Creator

- name: Yuto Urano
  role: author
  orcid: https://orcid.org/0009-0004-3646-2781
  organization: National Institute for Materials Science
- name: Ryo Tamura
  role: author
  orcid: https://orcid.org/0000-0002-0349-358X
  organization: National Institute for Materials Science
- name: Yui Tamogami
  role: author
  orcid: https://orcid.org/0009-0000-8573-940X
  organization: National Institute for Materials Science
- name: Toshikaze Kariyado
  role: author
  orcid: https://orcid.org/0000-0002-3746-6803
  organization: National Institute for Materials Science
- name: Yasumitsu Miyata
  role: author
  orcid: https://orcid.org/0000-0002-9733-5119
  organization: National Institute for Materials Science
- name: Daichi Kozawa
  role: author
  orcid: https://orcid.org/0000-0002-0629-5589
  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: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Ryo Kitaura
  role: author
  orcid: https://orcid.org/0000-0001-8108-109X
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: Moire superlattices
  schema: not_defined
- subject: Valley degrees of freedom
  schema: not_defined
- subject: spectroscopy
  schema: not_defined
- subject: two-dimensional materials
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2026-09-23

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Nano Letters
  issn: '15306984'
  volume: '26'
  issue: '39'
  start_page: 13255
  end_page: 13262

## Conference



## Related item



## Funding

- identifier: JPMJCR23A4
  funder_name: Japan Science and Technology Agency
- identifier: JPMJFR213X
  funder_name: Japan Science and Technology Agency
- identifier: JP20H00354
  funder_name: JSPS KAKENHI
- identifier: JP21H05232
  funder_name: JSPS KAKENHI
- identifier: JP21H05233
  funder_name: JSPS KAKENHI
- identifier: JP21H05234
  funder_name: JSPS KAKENHI
- identifier: JP22H04957
  funder_name: JSPS KAKENHI
- identifier: JP23H02052
  funder_name: JSPS KAKENHI
- identifier: JP23H05469
  funder_name: JSPS KAKENHI
- identifier: JP24H00044
  funder_name: JSPS KAKENHI
- identifier: JP24H02218
  funder_name: JSPS KAKENHI
- identifier: JP25H00835
  funder_name: JSPS KAKENHI
- identifier: JP25K22210
  funder_name: JSPS KAKENHI
- identifier: JP25K24588
  funder_name: JSPS KAKENHI
- identifier: JP26K22704
  funder_name: JSPS KAKENHI
- funder_name: World Premier International Research Center Initiative (WPI), MEXT,
    Japan

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## Fileset

- id: 955f39c6-fa25-4d63-b05a-dfad621eb571
  filename: 2604.16934v4.pdf
  content_type: application/pdf
  size: 1700606
  md5: 05004b4b6eb8ad38827ae1d2fbd4788a

## Thumbnail

fileset_id: 955f39c6-fa25-4d63-b05a-dfad621eb571
filename: 2604.16934v4.pdf