Detail publikace

Ultrafast Dynamics of Valley-Polarized Excitons in WSe2 Monolayer Studied by Few-Cycle Laser Pulses

KOUTENSKÝ, P. SLOBODENIUK, A. BARTOŠ, M. TROJÁNEK, F. MALÝ, P. KOZÁK, M.

Originální název

Ultrafast Dynamics of Valley-Polarized Excitons in WSe2 Monolayer Studied by Few-Cycle Laser Pulses

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

We report on the experimental investigation of the ultrafast dynamics of valley-polarized excitons in monolayer WSe (Formula presented.) 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

Klíčová slova

transition metal dichalcogenide monolayers; femtosecond transient reflection spectroscopy; intravalley excitons dynamics

Autoři

KOUTENSKÝ, P.; SLOBODENIUK, A.; BARTOŠ, M.; TROJÁNEK, F.; MALÝ, P.; KOZÁK, M.

Vydáno

28. 3. 2023

Nakladatel

MDPI

ISSN

2079-4991

Periodikum

Nanomaterials

Ročník

13

Číslo

7

Stát

Švýcarská konfederace

Strany od

1

Strany do

14

Strany počet

14

URL

https://www.mdpi.com/2079-4991/13/7/1207

Plný text v Digitální knihovně

http://hdl.handle.net/11012/213579

BibTex

@article{BUT183439,
  author="Petr {Koutenský} and Artur {Slobodeniuk} and Miroslav {Bartoš} and František {Trojánek} and Petr {Malý} and Martin {Kozák}",
  title="Ultrafast Dynamics of Valley-Polarized Excitons in WSe2 Monolayer Studied by Few-Cycle Laser Pulses",
  journal="Nanomaterials",
  year="2023",
  volume="13",
  number="7",
  pages="1--14",
  doi="10.3390/nano13071207",
  issn="2079-4991",
  url="https://www.mdpi.com/2079-4991/13/7/1207"
}