Measurement of the spin-forbidden dark excitons in MoS2 and MoSe2 monolayers

C. Robert (), B. Han (), P. Kapuscinski, A. Delhomme, C. Faugeras (), T. Amand, M. R. Molas, M. Bartos, K. Watanabe, T. Taniguchi, B. Urbaszek, M. Potemski and X. Marie
Additional contact information
C. Robert: University of Toulouse, INSA-CNRS-UPS, LPCNO
B. Han: University of Toulouse, INSA-CNRS-UPS, LPCNO
P. Kapuscinski: Laboratoire National des Champs Magnétiques Intenses, CNRS-UGA-UPS-INSA-EMFL
A. Delhomme: Laboratoire National des Champs Magnétiques Intenses, CNRS-UGA-UPS-INSA-EMFL
C. Faugeras: Laboratoire National des Champs Magnétiques Intenses, CNRS-UGA-UPS-INSA-EMFL
T. Amand: University of Toulouse, INSA-CNRS-UPS, LPCNO
M. R. Molas: University of Warsaw
M. Bartos: Laboratoire National des Champs Magnétiques Intenses, CNRS-UGA-UPS-INSA-EMFL
K. Watanabe: National Institute for Materials Science
T. Taniguchi: National Institute for Materials Science
B. Urbaszek: University of Toulouse, INSA-CNRS-UPS, LPCNO
M. Potemski: Laboratoire National des Champs Magnétiques Intenses, CNRS-UGA-UPS-INSA-EMFL
X. Marie: University of Toulouse, INSA-CNRS-UPS, LPCNO

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract Excitons with binding energies of a few hundreds of meV control the optical properties of transition metal dichalcogenide monolayers. Knowledge of the fine structure of these excitons is therefore essential to understand the optoelectronic properties of these 2D materials. Here we measure the exciton fine structure of MoS2 and MoSe2 monolayers encapsulated in boron nitride by magneto-photoluminescence spectroscopy in magnetic fields up to 30 T. The experiments performed in transverse magnetic field reveal a brightening of the spin-forbidden dark excitons in MoS2 monolayer: we find that the dark excitons appear at 14 meV below the bright ones. Measurements performed in tilted magnetic field provide a conceivable description of the neutral exciton fine structure. The experimental results are in agreement with a model taking into account the effect of the exchange interaction on both the bright and dark exciton states as well as the interaction with the magnetic field.

Date: 2020
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-020-17608-4 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17608-4

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-020-17608-4

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().