Detail publikace

Valley polarization of singlet and triplet trions in a WS(2)monolayer in magnetic fields

Kapuscinski, P. Vaclavkova, D. Grzeszczyk, M. Slobodeniuk, AO. Nogajewski, K. Bartos, M. Watanabe, K. Taniguchi, T. Faugeras, C. Babinski, A. Potemski, M. Molas, MR.

Originální název

Valley polarization of singlet and triplet trions in a WS(2)monolayer in magnetic fields

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The spectral signatures associated with different negatively charged exciton complexes (trions) in a WS(2)monolayer encapsulated in hBN are analyzed from low temperature and polarization resolved reflectance contrast (RC) and photoluminescence (PL) experiments, with an applied magnetic field. Based on results obtained from the RC experiment, we show that the valley Zeeman effect affects the optical response of both the singlet and the triplet trion species through the evolution of their energy and of their relative intensity, when applying an external magnetic field. Our analysis allows us to estimate a free electron concentration of similar to 1.3 x 10(11)cm(-2). The observed evolutions based on PL experiments on the same sample are different and can hardly be understood within the same simple frame, highlighting the complexity of relaxation processes involved in the PL response.

Klíčová slova

tungsten disufide; magnetic field; photoluminiscence; trion

Autoři

Kapuscinski, P.; Vaclavkova, D.; Grzeszczyk, M.; Slobodeniuk, AO.; Nogajewski, K.; Bartos, M.; Watanabe, K.; Taniguchi, T.; Faugeras, C.; Babinski, A.; Potemski, M.; Molas, MR.

Vydáno

14. 9. 2020

Nakladatel

ROYAL SOC CHEMISTRY

Místo

CAMBRIDGE

ISSN

1463-9076

Periodikum

Physical Chemistry Chemical Physics

Ročník

22

Číslo

34

Stát

Spojené království Velké Británie a Severního Irska

Strany od

19155

Strany do

19161

Strany počet

7

URL

https://pubs.rsc.org/en/content/articlelanding/2020/cp/d0cp02737e#!divAbstract

BibTex

@article{BUT167297,
  author="Kapuscinski, P. and Vaclavkova, D. and Grzeszczyk, M. and Slobodeniuk, AO. and Nogajewski, K. and Bartos, M. and Watanabe, K. and Taniguchi, T. and Faugeras, C. and Babinski, A. and Potemski, M. and Molas, MR.",
  title="Valley polarization of singlet and triplet trions in a WS(2)monolayer in magnetic fields",
  journal="Physical Chemistry Chemical Physics",
  year="2020",
  volume="22",
  number="34",
  pages="19155--19161",
  doi="10.1039/d0cp02737e",
  issn="1463-9076",
  url="https://pubs.rsc.org/en/content/articlelanding/2020/cp/d0cp02737e#!divAbstract"
}