Superradiant Coupling Effects in Transition-Metal Dichalcogenides

Authors

C. E. Stevens, University of South Florida
T. Stroucken, Philipps-University Marburg
A. V. Stier, National High Magnetic Field Laboratory
J. Paul, University of South Florida
H. Zhang, University of South Florida
P. Dey, University of South Florida
S. A. Crooker, National High Magnetic Field Laboratory
S. W. Koch, Philipps-University Marburg
Denis Karaiskaj, University of South FloridaFollow

Document Type

Article

Publication Date

2018

Digital Object Identifier (DOI)

https://doi.org/10.1364/OPTICA.5.000749

Abstract

Cooperative effects allow for fascinating characteristics in light–matter interacting systems. Here, we study naturally occurring superradiant coupling in a class of quasi–two-dimensional, layered semiconductor systems. We perform optical absorption experiments of the lowest exciton for transition-metal dichalcogenides with different numbers of atomic layers. We examine two representative materials, MoSe₂ and WSe₂, using incoherent broadband white light. The measured transmission at the A exciton resonance does not saturate for optically thick samples consisting of hundreds of atomic layers, and the transmission varies nonmonotonously with the layer number. A self-consistent microscopic calculation reproduces the experimental observations, clearly identifying superradiant coupling effects as the origin of this unexpected behavior.

Was this content written or created while at USF?

Yes

Citation / Publisher Attribution

Optica, v. 5, issue 6, p. 749-755

Scholar Commons Citation

Stevens, C. E.; Stroucken, T.; Stier, A. V.; Paul, J.; Zhang, H.; Dey, P.; Crooker, S. A.; Koch, S. W.; and Karaiskaj, Denis, "Superradiant Coupling Effects in Transition-Metal Dichalcogenides" (2018). Physics Faculty Publications. 55.
https://digitalcommons.usf.edu/phy_facpub/55