# Quantum Dynamics of Attractive and Repulsive Polarons in a Doped <math display="inline">  <mrow>    <msub>      <mrow>        <mi>MoSe</mi>      </mrow>      <mrow>        <mn>2</mn>      </mrow>    </msub>  </mrow></math> Monolayer

https://mdr.nims.go.jp/datasets/e7b27749-5f5d-46d4-a150-8cb5e9fcb8cb

## File

- [PhysRevX.13.011029.pdf](https://mdr.nims.go.jp/filesets/b2552013-352e-4b11-b778-d378506d7772/download) ([Detail](https://mdr.nims.go.jp/filesets/b2552013-352e-4b11-b778-d378506d7772.md))

## Id

e7b27749-5f5d-46d4-a150-8cb5e9fcb8cb

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-18T02:26:24.263950Z

## Updated at

2025-02-23T13:47:02.432638Z

## Published at

2025-02-23T13:47:02.547183Z

## Doi



## First published url

https://doi.org/10.1103/physrevx.13.011029

## Date published

2023-03-02

## Recorded date published

2023-3

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: "Quantum Dynamics of Attractive and Repulsive Polarons in a Doped \n<mml:math
    xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mml:mrow><mml:msub><mml:mrow><mml:mi>MoSe</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>\n
    Monolayer"
  title_type: original
  lang: en

## Description

- description: 'When mobile impurities are introduced and coupled to a Fermi gas,
    new quasiparticles known as Fermi polarons are formed. There are two interesting,
    yet drastically different regimes of the Fermi polaron problem: (I) the attractive
    polaron branch, which connects to pairing phenomena spanning the crossover from
    BCS superfluidity to the Bose-Einstein condensation of molecules; and (II) the
    repulsive branch, which underlies the physics responsible for Stoner’s itinerant
    ferromagnetism. Here, we study Fermi polarons in two dimensional systems where
    many questions and debates regarding their nature persist. The model system we
    investigate is a doped MoSe2 monolayer. Remarkably, not only the energy splitting
    but also the quantum dynamics of attractive polarons agree with the predictions
    of polaron theory well. As the doping density increases, the quantum dephasing
    of the attractive polarons remains constant, indicative of stable quasiparticles,
    while the repulsive polaron dephasing rate increases nearly quadratically, as
    a consequence of the interplay between the electron Fermi seas in two valleys.
    The dynamics of Fermi polarons are of critical importance for understanding the
    pairing and magnetic instabilities that lead to the formation of rich quan- tum
    phases found in a wide range of physical systems including nuclei, cold atomic
    gases, and solids.'
  description_type: abstract
  lang: und

## Creator

- name: Di Huang
  role: author
- name: Kevin Sampson
  role: author
- name: Yue Ni
  role: author
- name: Zhida Liu
  role: author
- name: Danfu Liang
  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: Hebin Li
  role: author
- name: Eric Martin
  role: author
- name: Jesper Levinsen
  role: author
- name: Meera M. Parish
  role: author
- name: Emanuel Tutuc
  role: author
- name: Dmitry K. Efimkin
  role: author
- name: Xiaoqin Li
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: Fermi polarons
  schema: not_defined
- subject: MoSe2 monolayer
  schema: not_defined
- subject: quantum dynamics
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Physical Review X
  issn: '21603308'
  volume: '13'
  issue: '1'
  article_number: '011029'

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## Funding

- funder_name: U.S. Department of Energy
- identifier: DE-SC0019398
  funder_name: Basic Energy Sciences
- identifier: DMR-1808042
  funder_name: National Science Foundation
- identifier: NNCI-2025227
  funder_name: National Science Foundation
- identifier: DMR-1747426
  funder_name: National Science Foundation
- identifier: DMR-1720595
  funder_name: Materials Research Science and Engineering Center, Harvard University
- identifier: F-1662
  funder_name: Welch Foundation
- identifier: DP210101652
  funder_name: Australian Research Council
- identifier: CE170100039
  funder_name: Centre of Excellence in Future Low-Energy Electronics Technologies,
    Australian Research Council
- identifier: W911NF-17-1-0312
  funder_name: Army Research Office
- identifier: 19H05790
  funder_name: Japan Society for the Promotion of Science
- identifier: 21H05233
  funder_name: Japan Society for the Promotion of Science
- identifier: DMR-2122078
  funder_name: National Science Foundation
- identifier: 20H00354
  funder_name: Japan Society for the Promotion of Science

## Instrument



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## Fileset

- id: b2552013-352e-4b11-b778-d378506d7772
  filename: PhysRevX.13.011029.pdf
  content_type: application/pdf
  size: 1311917
  md5: 34ecefdaa96c666aa5110a3b89b2423b

## Thumbnail

fileset_id: b2552013-352e-4b11-b778-d378506d7772
filename: PhysRevX.13.011029.pdf