---
_id: '6542'
abstract:
- lang: eng
  text: Transient changes of the optical response of WS2 monolayers are studied by
    femtosecond broadband pump–probe spectroscopy. Time-dependent absorption spectra
    are analyzed by tracking the line width broadening, bleaching, and energy shift
    of the main exciton resonance as a function of time delay after the excitation.
    Two main sources for the pump-induced changes of the optical response are identified.
    Specifically, we find an interplay between modifications induced by many-body
    interactions from photoexcited carriers and by the subsequent transfer of the
    excitation to the phonon system followed by cooling of the material through the
    heat transfer to the substrate.
article_type: original
author:
- first_name: Claudia
  full_name: Ruppert, Claudia
  last_name: Ruppert
- first_name: Alexey
  full_name: Chernikov, Alexey
  last_name: Chernikov
- first_name: Heather M.
  full_name: Hill, Heather M.
  last_name: Hill
- first_name: Albert F.
  full_name: Rigosi, Albert F.
  last_name: Rigosi
- first_name: Tony F.
  full_name: Heinz, Tony F.
  last_name: Heinz
citation:
  ama: Ruppert C, Chernikov A, Hill HM, Rigosi AF, Heinz TF. The Role of Electronic
    and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast
    Excitation. <i>Nano Letters</i>. 2017;17(2):644-651. doi:<a href="https://doi.org/10.1021/acs.nanolett.6b03513">10.1021/acs.nanolett.6b03513</a>
  apa: Ruppert, C., Chernikov, A., Hill, H. M., Rigosi, A. F., &#38; Heinz, T. F.
    (2017). The Role of Electronic and Phononic Excitation in the Optical Response
    of Monolayer WS2 after Ultrafast Excitation. <i>Nano Letters</i>, <i>17</i>(2),
    644–651. <a href="https://doi.org/10.1021/acs.nanolett.6b03513">https://doi.org/10.1021/acs.nanolett.6b03513</a>
  bibtex: '@article{Ruppert_Chernikov_Hill_Rigosi_Heinz_2017, title={The Role of Electronic
    and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast
    Excitation}, volume={17}, DOI={<a href="https://doi.org/10.1021/acs.nanolett.6b03513">10.1021/acs.nanolett.6b03513</a>},
    number={2}, journal={Nano Letters}, publisher={American Chemical Society (ACS)},
    author={Ruppert, Claudia and Chernikov, Alexey and Hill, Heather M. and Rigosi,
    Albert F. and Heinz, Tony F.}, year={2017}, pages={644–651} }'
  chicago: 'Ruppert, Claudia, Alexey Chernikov, Heather M. Hill, Albert F. Rigosi,
    and Tony F. Heinz. “The Role of Electronic and Phononic Excitation in the Optical
    Response of Monolayer WS2 after Ultrafast Excitation.” <i>Nano Letters</i> 17,
    no. 2 (2017): 644–51. <a href="https://doi.org/10.1021/acs.nanolett.6b03513">https://doi.org/10.1021/acs.nanolett.6b03513</a>.'
  ieee: C. Ruppert, A. Chernikov, H. M. Hill, A. F. Rigosi, and T. F. Heinz, “The
    Role of Electronic and Phononic Excitation in the Optical Response of Monolayer
    WS2 after Ultrafast Excitation,” <i>Nano Letters</i>, vol. 17, no. 2, pp. 644–651,
    2017.
  mla: Ruppert, Claudia, et al. “The Role of Electronic and Phononic Excitation in
    the Optical Response of Monolayer WS2 after Ultrafast Excitation.” <i>Nano Letters</i>,
    vol. 17, no. 2, American Chemical Society (ACS), 2017, pp. 644–51, doi:<a href="https://doi.org/10.1021/acs.nanolett.6b03513">10.1021/acs.nanolett.6b03513</a>.
  short: C. Ruppert, A. Chernikov, H.M. Hill, A.F. Rigosi, T.F. Heinz, Nano Letters
    17 (2017) 644–651.
date_created: 2019-01-09T10:00:23Z
date_updated: 2022-01-06T07:03:11Z
department:
- _id: '230'
doi: 10.1021/acs.nanolett.6b03513
intvolume: '        17'
issue: '2'
keyword:
- Atomically thin 2D materials
- carrier and phonon dynamics
- ultrafast spectroscopy
language:
- iso: eng
page: 644-651
project:
- _id: '53'
  name: TRR 142
- _id: '54'
  name: TRR 142 - Project Area A
- _id: '58'
  name: TRR 142 - Subproject A1
publication: Nano Letters
publication_identifier:
  issn:
  - 1530-6984
  - 1530-6992
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer
  WS2 after Ultrafast Excitation
type: journal_article
user_id: '49428'
volume: 17
year: '2017'
...