Přístupnostní navigace
E-application
Search Search Close
Publication detail
Kapuscinski, P. Vaclavkova, D. Grzeszczyk, M. Slobodeniuk, AO. Nogajewski, K. Bartos, M. Watanabe, K. Taniguchi, T. Faugeras, C. Babinski, A. Potemski, M. Molas, MR.
Original Title
Valley polarization of singlet and triplet trions in a WS(2)monolayer in magnetic fields
Type
journal article in Web of Science
Language
English
Original Abstract
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.
Keywords
tungsten disufide; magnetic field; photoluminiscence; trion
Authors
Kapuscinski, P.; Vaclavkova, D.; Grzeszczyk, M.; Slobodeniuk, AO.; Nogajewski, K.; Bartos, M.; Watanabe, K.; Taniguchi, T.; Faugeras, C.; Babinski, A.; Potemski, M.; Molas, MR.
Released
14. 9. 2020
Publisher
ROYAL SOC CHEMISTRY
Location
CAMBRIDGE
ISBN
1463-9076
Periodical
Physical Chemistry Chemical Physics
Year of study
22
Number
34
State
United Kingdom of Great Britain and Northern Ireland
Pages from
19155
Pages to
19161
Pages count
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" }