Mapping of the dark exciton landscape in transition metal dichalcogenides
Journal article, 2018

Transition metal dichalcogenides (TMDs) exhibit a remarkable exciton physics including bright and optically forbidden dark excitonic states. Here, we show how dark excitons can be experimentally revealed by probing the intraexcitonic 1s-2p transition. Distinguishing the optical response shortly after the excitation and after the exciton thermalization allows us to reveal the relative position of bright and dark excitons. We find both in theory and experiment a clear blueshift in the optical response demonstrating the transition of bright exciton populations into lower-lying dark excitonic states.

Author

Gunnar Berghäuser

Chalmers, Physics, Condensed Matter Theory

Philipp Steinleitner

University of Regensburg

Philipp Merkl

University of Regensburg

R. Huber

University of Regensburg

A. Knorr

Technische Universität Berlin

Ermin Malic

Chalmers, Physics, Condensed Matter Theory

Physical Review B

2469-9950 (ISSN) 2469-9969 (eISSN)

Vol. 98 2 020301

Subject Categories

Atom and Molecular Physics and Optics

Other Physics Topics

Condensed Matter Physics

DOI

10.1103/PhysRevB.98.020301

More information

Latest update

9/19/2018