# Time-domain signatures of distinct correlated insulators in a moiré superlattice

https://mdr.nims.go.jp/datasets/7dbf6175-1742-4f15-9d0e-ab7cf194a007

## Files

- [s41467-024-54886-8.pdf](https://mdr.nims.go.jp/filesets/00988c10-55f7-4ed7-81aa-2ed41665415b/download) ([Detail](https://mdr.nims.go.jp/filesets/00988c10-55f7-4ed7-81aa-2ed41665415b.md))

## Id

7dbf6175-1742-4f15-9d0e-ab7cf194a007

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-04T06:31:19.159888Z

## Updated at

2025-02-05T03:30:31.377078Z

## Published at

2025-02-05T03:30:31.465146Z

## Doi



## First published url

https://doi.org/10.1038/s41467-024-54886-8

## Date published

2025-01-09

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Time-domain signatures of distinct correlated insulators in a moiré superlattice
  title_type: original
  lang: en

## Description

- description: Among expanding discoveries of quantum phases in moiré superlattices,
    correlated insulators stand out as both the most stable and most commonly observed.
    Despite the central importance of these states in moiré physics, little is known
    about their underlying nature. Here, we use pump-probe spectroscopy to show distinct
    time-domain signatures of correlated insulators at fillings of one (v = -1) and
    two (v = -2) holes per moiré unit cell in the angle-aligned WSe2/WS2 system. Following
    photo-doping, we find that the disordering time of the v = -1 state is independent
    of excitation density (nex), as expected from the characteristic phonon response
    time associated with a polaronic state. In contrast, the disordering time of the
    v = -2 state scales with 1/(nex)^1/2, in agreement with plasmonic screening from
    free holons and doublons. These states display disparate reordering behavior dominated
    either by first order (v = -1) or second order (v = -2) recombination, suggesting
    the presence of Hubbard excitons and free carrier-like holons/doublons, respectively.
    Our work delineates the roles of electron-phonon (e-ph) versus electron-electron
    (e-e) interactions in correlated insulators on the moiré landscape and establishes
    non-equilibrium responses as mechanistic signatures for distinguishing and discovering
    quantum phases.
  description_type: abstract
  lang: und

## Creator

- name: Eric A. Arsenault
  role: author
  orcid: https://orcid.org/0000-0002-5363-3229
- name: Yiliu Li
  role: author
- name: Birui Yang
  role: author
  orcid: https://orcid.org/0009-0000-2346-8173
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
- name: James C. Hone
  role: author
  orcid: https://orcid.org/0000-0002-8084-3301
- name: Cory R. Dean
  role: author
  orcid: https://orcid.org/0000-0003-2967-5960
- name: Xiaodong Xu
  role: author
- name: X.-Y. Zhu
  role: author
  orcid: https://orcid.org/0000-0002-2090-8484

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Correlated insulators
  schema: not_defined
- subject: pump-probe spectroscopy
  schema: not_defined
- subject: WSe2/WS2
  schema: not_defined

## Rights

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

## Other identifier(s)



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## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '16'
  issue: '1'
  article_number: '549'

## Conference



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## Funding

- identifier: DE-SC0019443
  funder_name: U.S. Department of Energy
- identifier: DE-SC0024343
  funder_name: U.S. Department of Energy
- identifier: DMR-2011738
  funder_name: National Science Foundation

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## Fileset

- id: '00988c10-55f7-4ed7-81aa-2ed41665415b'
  filename: s41467-024-54886-8.pdf
  content_type: application/pdf
  size: 1568801
  md5: 61898cfa9ba9ed9751cf6c2114f927f8

## Thumbnail

fileset_id: '00988c10-55f7-4ed7-81aa-2ed41665415b'
filename: s41467-024-54886-8.pdf