# Thermodynamic behavior of correlated electron-hole fluids in van der Waals heterostructures

https://mdr.nims.go.jp/datasets/ed47b389-89dd-4878-a835-460907fcdc84

## File

- [s41467-023-43799-7.pdf](https://mdr.nims.go.jp/filesets/81045484-9a04-4b66-a934-4fcdd2f02fee/download) ([Detail](https://mdr.nims.go.jp/filesets/81045484-9a04-4b66-a934-4fcdd2f02fee.md))

## Id

ed47b389-89dd-4878-a835-460907fcdc84

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-07T07:18:46.107739Z

## Updated at

2025-02-10T07:30:15.894134Z

## Published at

2025-02-10T07:30:16.953824Z

## Doi



## First published url

https://doi.org/10.1038/s41467-023-43799-7

## Date published

2023-12-13

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Thermodynamic behavior of correlated electron-hole fluids in van der Waals
    heterostructures
  title_type: original
  lang: en

## Description

- description: "Coupled two-dimensional electron-hole bilayers provide a unique platform
    to study strongly correlated Bose-Fermi mixtures in condensed matter. Electrons
    and holes in spatially separated layers can bind to form interlayer excitons,
    composite Bosons expected to support excitonic insulators and high-temperature
    exciton superfluids. The interlayer excitons can also interact strongly with excess
    charge carriers when electron and hole densities are unequal. Here, we use optical
    spectroscopy to quantitatively probe the local thermodynamic properties of strongly
    correlated electron-hole fluids in MoSe2/hBN/WSe2 heterostructures. We observe
    a discontinuity in the electron and hole chemical potentials at matched electron
    and hole densities, a definitive signature of an excitonic insulator ground state.
    The exciton insulator is stable up to a Mott density of ~0.8×1012 cm-2 and has
    a thermal ionization temperature of ~70 K. The density dependence of the electron,
    hole, and exciton chemical potentials reveals strong correlation effects across
    the phase diagram. Compared with a non-interacting uniform charge distribution,
    the correlation effects lead to significant attractive exciton-exciton and exciton-charge
    interactions in the electron-hole fluid. Our work highlights the unique quantum
    behavior that can emerge in strongly correlated electron-hole systems.\r\n"
  description_type: abstract
  lang: und

## Creator

- name: Ruishi Qi
  role: author
- name: Andrew Y. Joe
  role: author
- name: Zuocheng Zhang
  role: author
- name: Yongxin Zeng
  role: author
- name: Tiancheng Zheng
  role: author
- name: Qixin Feng
  role: author
- name: Jingxu Xie
  role: author
- name: Emma Regan
  role: author
- name: Zheyu Lu
  role: author
- 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: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Sefaattin Tongay
  role: author
- name: Michael F. Crommie
  role: author
- name: Allan H. MacDonald
  role: author
- name: Feng Wang
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Electron-hole bilayers
  schema: not_defined
- subject: excitonic insulator
  schema: not_defined
- subject: MoSe2/hBN/WSe2 heterostructures
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '14'
  issue: '1'
  article_number: '8264'

## Conference



## Related item



## Funding

- identifier: DE-AC02-05-CH11231
  funder_name: U.S. Department of Energy
- identifier: DOE-SC0020653
  funder_name: U.S. Department of Energy
- identifier: FA9550-23-1-0246
  funder_name: United States Department of Defense | U.S. Air Force
- identifier: 19H05790, 20H00354
  funder_name: MEXT | Japan Society for the Promotion of Science

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## Fileset

- id: 81045484-9a04-4b66-a934-4fcdd2f02fee
  filename: s41467-023-43799-7.pdf
  content_type: application/pdf
  size: 1580955
  md5: 7a789abeaafa0c9bddd33481a2a063ff

## Thumbnail

fileset_id: 81045484-9a04-4b66-a934-4fcdd2f02fee
filename: s41467-023-43799-7.pdf