Skip to Main content Skip to Navigation
Directions of work or proceedings

Energy levels and THz optical properties in Graphene Quantum Dots

Abstract : Owing to their energy level splitting in the meV range, large graphene quantum dots (size ~100 nm) are very attractive candidates for THz technology. Whereas their electronic properties have been widely studied by transport measurements, only very few works have been focused on their interaction with THz radiation. Here, we report a theoretical and experimental investigation of the optical properties at THz frequencies of large graphene quantum dots. Using a tight-binding modeling, we show the existence of spatially extended mixed-states that should couple efficiently to THz photons. Furthermore, we experimentally demonstrate THz optical absorption of an array of circular 75 nm-diameter graphene quantum dots at 4K and 300K.
Document type :
Directions of work or proceedings
Complete list of metadata

https://hal-cnrs.archives-ouvertes.fr/hal-03455276
Contributor : Nadege Dastillung Connect in order to contact the contributor
Submitted on : Monday, November 29, 2021 - 3:43:45 PM
Last modification on : Tuesday, January 4, 2022 - 6:12:57 AM

Identifiers

Citation

S. Massabeau, E. Riccardi, T. Apretna, M. Rosticher, C. Berger, et al.. Energy levels and THz optical properties in Graphene Quantum Dots. 2020 45th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Nov 2020, Buffalo, IEEE, pp.1-1, 2020, ⟨10.1109/IRMMW-THz46771.2020.9370949⟩. ⟨hal-03455276⟩

Share

Metrics

Les métriques sont temporairement indisponibles