# Suppression of shear ionic motions in bismuth by coupling with large-amplitude internal displacement

https://mdr.nims.go.jp/datasets/b281b80a-44aa-4dac-9b26-d9c6ea434ece

## Files

- [BQ14793.pdf](https://mdr.nims.go.jp/filesets/f31fa844-ce97-47d8-a80d-9b28f55e8043/download) ([Detail](https://mdr.nims.go.jp/filesets/f31fa844-ce97-47d8-a80d-9b28f55e8043.md))

## Id

b281b80a-44aa-4dac-9b26-d9c6ea434ece

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-10-02T02:26:45.844890Z

## Updated at

2024-10-02T07:30:23.190510Z

## Published at

2024-10-02T07:30:23.430693Z

## Doi

https://doi.org/10.48505/nims.4793

## First published url

https://doi.org/10.1103/physrevb.110.094313

## Date published

2024-09-20

## Recorded date published

2024-9

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Suppression of shear ionic motions in bismuth by coupling with large-amplitude
    internal displacement
  title_type: original
  lang: en

## Description

- description: We investigate the Eg phonon dynamics under intense photoexcitation
    by performing anisotropic transient reflectivity (TR) measurements on a 1-mm thick
    bismuth single crystal at 11 K.  The amplitude of coherent Eg phonon is found
    to increase with incident pump fluence up to 10 mJ/cm2 and then turns to an apparent
    decrease.  This behavior is in stark contrast to the amplitude of the A1g phonon
    in standard TR measurements, which increases monotonically up to 20 mJ/cm2 and
    then saturates.  The contrasted behaviors of the two phonon modes can be interpreted
    in terms of the strong coupling of the Eg oscillation with large-amplitude A1g
    displacement on a highly excited electronic state, where dynamic fluctuation of
    the vibrational potential would lead to a quick loss in the Eg vibrational coherence.  Unlike  the
    previous studies on thin Bi films on substrates we observe no sign of a transition
    to a high-symmetry phase but a sign of partial damage of the crystalline surface
    at 28 mJ/cm2, possibly due to less efficient cooling at the surface of a bulk
    crystal.
  description_type: abstract
  lang: und

## Creator

- name: Kunie Ishioka
  role: author
  orcid: https://orcid.org/0000-0002-2285-8839
  organization: National Institute for Materials Science
- name: Oleg V. Misochko
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: coherent phonons
  schema: not_defined
- subject: phonon-phonon coupling
  schema: not_defined
- subject: bismuth
  schema: not_defined

## Rights

- description: "©2024 American Physical Society "
  identifier: http://rightsstatements.org/vocab/InC/1.0/

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## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: PHYSICAL REVIEW B
  issn: '24699950'
  volume: '110'
  issue: '9'
  article_number: '094313'

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## Fileset

- id: f31fa844-ce97-47d8-a80d-9b28f55e8043
  filename: BQ14793.pdf
  content_type: application/pdf
  size: 1720736
  md5: fc94376ff596dc6e5415c3d66a14b038

## Thumbnail

fileset_id: f31fa844-ce97-47d8-a80d-9b28f55e8043
filename: BQ14793.pdf