Sign in to use this feature.

Years

Between: -

Subjects

remove_circle_outline

Journals

Article Types

Countries / Regions

Search Results (1)

Search Parameters:
Keywords = intravalley excitons dynamics

Order results
Result details
Results per page
Select all
Export citation of selected articles as:
14 pages, 2048 KiB  
Article
Ultrafast Dynamics of Valley-Polarized Excitons in WSe2 Monolayer Studied by Few-Cycle Laser Pulses
by Petr Koutenský, Artur Slobodeniuk, Miroslav Bartoš, František Trojánek, Petr Malý and Martin Kozák
Nanomaterials 2023, 13(7), 1207; https://doi.org/10.3390/nano13071207 - 28 Mar 2023
Cited by 2 | Viewed by 2248
Abstract
We report on the experimental investigation of the ultrafast dynamics of valley-polarized excitons in monolayer WSe2 using transient reflection spectroscopy with few-cycle laser pulses with 7 fs duration. We observe that at room temperature, the anisotropic valley population of excitons decays on [...] Read more.
We report on the experimental investigation of the ultrafast dynamics of valley-polarized excitons in monolayer WSe2 using transient reflection spectroscopy with few-cycle laser pulses with 7 fs duration. We observe that at room temperature, the anisotropic valley population of excitons decays on two different timescales. The shorter decay time of approximately 120 fs is related to the initial hot exciton relaxation related to the fast direct recombination of excitons from the radiative zone, while the slower picosecond dynamics corresponds to valley depolarization induced by Coloumb exchange-driven transitions of excitons between two inequivalent valleys. Full article
Show Figures

Figure 1

Back to TopTop