Exciton optics, dynamics, and transport in atomically thin semiconductors

R Perea-Causin, D Erkensten, JM Fitzgerald… - APL Materials, 2022 - pubs.aip.org
Atomically thin semiconductors such as transition metal dichalcogenide (TMD) monolayers
exhibit a very strong Coulomb interaction, giving rise to a rich exciton landscape. This makes …

Electron-exciton interactions in the exciton-polaron problem

DK Efimkin, EK Laird, J Levinsen, MM Parish… - Physical Review B, 2021 - APS
Recently, it has been demonstrated that the absorption of moderately doped two-
dimensional semiconductors can be described in terms of exciton polarons. In this scenario …

Probing Dark Excitons in Monolayer by Nonlinear Two-Photon Spectroscopy

C Qian, V Villafañe, P Soubelet, P Ji, AV Stier… - Physical Review Letters, 2024 - APS
We report a new dark exciton in monolayer MoS 2 using second harmonic generation
spectroscopy. Hereby, the spectrally dependent second harmonic generation intensity splits …

Trion Binding Energy Variation on Photoluminescence Excitation Energy and Power during Direct to Indirect Bandgap Crossover in Monolayer and Few-Layer MoS2

S Golovynskyi, OI Datsenko, D Dong… - The Journal of …, 2021 - ACS Publications
The behavior of the trion and exciton photoluminescence (PL) under various laser excitation
conditions, that is, energy and power, is studied in monolayer and few-layer (FL) chemical …

Substrate impact on the thickness dependence of vibrational and optical properties of large area MoS2 produced by gold-assisted exfoliation

SE Panasci, E Schilirò, F Migliore, M Cannas… - Applied Physics …, 2021 - pubs.aip.org
The gold-assisted exfoliation is a very effective method to produce large-area (cm 2-scale)
membranes of molybdenum disulfide (MoS 2) for electronics. However, the strong MoS 2/Au …

MoS2 two-dimensional quantum dots with weak lateral quantum confinement: Intense exciton and trion photoluminescence

S Golovynskyi, M Bosi, L Seravalli, B Li - Surfaces and Interfaces, 2021 - Elsevier
MoS 2 two-dimensional quantum dots (2D-QDs) are one of the novel 2D materials. In this
work, MoS 2 2D-QDs were grown on SiO 2/Si by chemical vapor deposition and their exciton …

Crossover from exciton polarons to trions in doped two-dimensional semiconductors at finite temperature

A Tiene, BC Mulkerin, J Levinsen, MM Parish… - Physical Review B, 2023 - APS
We study systematically the role of temperature in the optical response of doped two-
dimensional semiconductors. By making use of a finite-temperature Fermi-polaron theory …

Mn2NT2 (T = O, F) Nanosheets for Electrically and Thermally Driven Magnetic Tunnel Junctions

X Zhang, P Gong, F Liu, J Wu, S Zhu - ACS Applied Nano …, 2022 - ACS Publications
Because of their unusual electrical and magnetic properties, half-metals are well suited for
sophisticated nanoscale spintronics applications. We examine the electronic structure, spin …

Optically induced trion formation and its control in a MoS 2/graphene van der Waals heterostructure

MG Dastidar, N Basu, IH Kao, J Katoch, PK Nayak… - Nanoscale, 2024 - pubs.rsc.org
Monolayer 2D transition metal dichalcogenides (TMDs) show high sensitivity to the local
dielectric environment, leading to modulation of their optoelectronic properties. Here, we …

Microscopic theory of exciton and trion polaritons in doped monolayers of transition metal dichalcogenides

YV Zhumagulov, S Chiavazzo, DR Gulevich… - npj Computational …, 2022 - nature.com
We study a doped transition metal dichalcogenide (TMDC) monolayer in an optical
microcavity. Using the microscopic theory, we simulate spectra of quasiparticles emerging …