Unveiling the complex phonon nature and phonon cascades in 1L to 5L WSe<sub>2</sub> using multiwavelength excitation Raman scattering-Reference-Cited by-同舟云学术

Unveiling the complex phonon nature and phonon cascades in 1L to 5L WSe₂ using multiwavelength excitation Raman scattering

Published:2024 Issue:18 Volume:6 Page:4591-4603
ISSN:2516-0230
Container-title:Nanoscale Advances
language:en
Short-container-title:Nanoscale Adv.

Author:

Blaga Claire¹,Labordet Álvarez Ángel²,Balgarkashi Akshay¹^ORCID,Banerjee Mitali³,Fontcuberta i Morral Anna¹⁴^ORCID,Dimitrievska Mirjana¹²^ORCID

Affiliation:

1. Laboratory of Semiconductor Materials, Institute of Materials, School of Engineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland

2. Nanomaterials Spectroscopy and Imaging Group, Transport at Nanoscale Interfaces Laboratory, Swiss Federal Laboratories for Material Science and Technology (EMPA), Ueberlandstrasse 129, 8600 Duebendorf, Switzerland

3. Laboratory of Quantum Physics, Topology and Correlations, Institute of Physics, School of Basic Sciences, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland

4. Institute of Physics, School of Basic Sciences, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland

Abstract

We unveil the complex phonon dynamics of WSe2 by using multiwavelength excitation Raman spectroscopy and report phonon-cascades for all WSe2 flake thicknesses, indicating strong phonon–electron interactions during early carrier relaxation processes.

Funder

Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

European Commission

Publisher

Royal Society of Chemistry (RSC)

Link

http://pubs.rsc.org/en/content/articlepdf/2024/NA/D4NA00399C

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