Beating signals in CdSe quantum dots measured by low-temperature 2D spectroscopy
(2022) In Journal of Chemical Physics 157(1).- Abstract
Advances in ultrafast spectroscopy can provide access to dynamics involving nontrivial quantum correlations and their evolutions. In coherent 2D spectroscopy, the oscillatory time dependence of a signal is a signature of such quantum dynamics. Here, we study such beating signals in electronic coherent 2D spectroscopy of CdSe quantum dots (CdSe QDs) at 77 K. The beating signals are analyzed in terms of their positive and negative Fourier components. We conclude that the beatings originate from coherent LO-phonons of CdSe QDs. No evidence for the QD size dependence of the LO-phonon frequency was identified.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/9b44a99b-de06-4d0d-bc8f-9f2b2fe0309c
- author
- Wang, Zhengjun LU ; Hedse, Albin LU ; Amarotti, Edoardo LU ; Lenngren, Nils LU ; Źídek, Karel LU ; Zheng, Kaibo LU ; Zigmantas, Donatas LU and Pullerits, Tõnu LU
- organization
- publishing date
- 2022-07-07
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Chemical Physics
- volume
- 157
- issue
- 1
- article number
- 014201
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- scopus:85133665156
- pmid:35803814
- ISSN
- 0021-9606
- DOI
- 10.1063/5.0089798
- language
- English
- LU publication?
- yes
- id
- 9b44a99b-de06-4d0d-bc8f-9f2b2fe0309c
- date added to LUP
- 2022-09-23 13:45:20
- date last changed
- 2024-04-15 19:22:00
@article{9b44a99b-de06-4d0d-bc8f-9f2b2fe0309c, abstract = {{<p>Advances in ultrafast spectroscopy can provide access to dynamics involving nontrivial quantum correlations and their evolutions. In coherent 2D spectroscopy, the oscillatory time dependence of a signal is a signature of such quantum dynamics. Here, we study such beating signals in electronic coherent 2D spectroscopy of CdSe quantum dots (CdSe QDs) at 77 K. The beating signals are analyzed in terms of their positive and negative Fourier components. We conclude that the beatings originate from coherent LO-phonons of CdSe QDs. No evidence for the QD size dependence of the LO-phonon frequency was identified.</p>}}, author = {{Wang, Zhengjun and Hedse, Albin and Amarotti, Edoardo and Lenngren, Nils and Źídek, Karel and Zheng, Kaibo and Zigmantas, Donatas and Pullerits, Tõnu}}, issn = {{0021-9606}}, language = {{eng}}, month = {{07}}, number = {{1}}, publisher = {{American Institute of Physics (AIP)}}, series = {{Journal of Chemical Physics}}, title = {{Beating signals in CdSe quantum dots measured by low-temperature 2D spectroscopy}}, url = {{http://dx.doi.org/10.1063/5.0089798}}, doi = {{10.1063/5.0089798}}, volume = {{157}}, year = {{2022}}, }