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Excitons dominate the optical properties of monolayer transition metal dichalcogenides (TMDs). Besides optically accessible bright exciton states, TMDs exhibit also a multitude of optically forbidden dark excitons. Here, we show that…

Excitons in twisted bilayers of transition metal dichalcogenides have strongly modified dispersion relations due to the formation of periodic moir\'e potentials. The strong coupling to a light field in an optical cavity leads to the…

Mesoscale and Nanoscale Physics · Physics 2024-06-11 Kevin Jürgens , Daniel Wigger , Tilmann Kuhn

The properties of moir\'e excitons in twisted bilayers of transition metal dichalcogenides (TMDCs) vary significantly with the twist angle, ranging from quasi localized excitons with flat dispersions for small twist angles to delocalized…

Mesoscale and Nanoscale Physics · Physics 2026-04-08 Daniel Groll , Anton Plonka , Kevin Jürgens , Daniel Wigger , Tilmann Kuhn

The optical response of two-dimensional (2D) materials has been customarily calculated ab initio using plane waves and without separating the most important orbitals contributions. In the family of transition metal dichalcogenides (TMDC)…

Mesoscale and Nanoscale Physics · Physics 2025-12-30 Angiolo Huamán

Monolayers of transition metal dichalcogenides (TMDCs) exhibit an exceptionally strong Coulomb interaction between charge carriers due to the two-dimensional carrier confinement in connection with weak dielectric screening. High densities…

Mesoscale and Nanoscale Physics · Physics 2018-08-08 D. Erben , A. Steinhoff , G. Schönhoff , T. O. Wehling , C. Gies , F. Jahnke

Heterostructures of layered transition metal dichalcogenides (TMDs) host long-lived, tunable excitons, making them intriguing candidates for material-based quantum information applications. Light absorption in these systems induces a…

Materials Science · Physics 2023-08-25 Tomer Amit , Sivan Refaely-Abramson

Two dimensional (2D) transition metal dichalcogenide (TMDC) materials, such as MoS2, WS2, MoSe2, and WSe2, have received extensive attention in the past decade due to their extraordinary physical properties. The unique properties make them…

The coupling of atomic vibrations to electronic excitations - traditionally understood to be a source of energy loss in semiconductors - has recently been explored in photosynthetic light harvesting as a means to circumvent dissipation by…

Materials Science · Physics 2026-02-04 Yifan Liu , Robert Dawson , Nathaniel Gabor , Vivek Aji

Monolayers of transition metal dichalcogenides (TMDs) have been established in the last years as promising materials for novel optoelectronic devices. However, the performance of such devices is often limited by the dissociation of tightly…

Mesoscale and Nanoscale Physics · Physics 2024-02-13 Raul Perea-Causin , Samuel Brem , Ermin Malic

Transition metal dichalcogenides (TMDs) are emerging as promising two-dimensional (2d) semiconductors for optoelectronic and flexible devices. However, a microscopic explanation of their photophysics -- of pivotal importance for the…

Semiconducting transition metal dichalcogenides (TMDs), such as MoSe$_2$ and WSe$_2$, exhibit unique optical and electronic properties. Vertical stacking of layers of one or more TMDs, to create heterostructures, has expanded the fields of…

We theoretically investigate the corrections of exciton binding energy in monolayer transition metal dichalcogenides (TMDs) due to the exciton-optical phonon coupling in the Fr$\ddot{o}$hlich interaction model by using the linear operator…

Mesoscale and Nanoscale Physics · Physics 2017-01-04 Zi-Wu Wang , Yao Xiao , Wei-Ping Li , Run-Ze Li , Zhi-Qing Li

The unique electrical and optical properties of emerging two-dimensional transition metal dichal-cogenides (TMDs) present compelling advantages over conventional semiconductors, including Si, Ge, and GaAs. Nevertheless, realising the full…

Materials Science · Physics 2025-07-23 Yusuf Kerem Bostan , Elanur Hut , Cem Sanga , Nadire Nayir , Ayse Erol , Yue Wang , Fahrettin Sarcan

The interaction between off-resonant laser pulses and excitons in monolayer transition metal dichalcogenides is attracting increasing interest as a route for the valley-selective coherent control of the exciton properties. Here, we extend…

Semiconducting transition-metal dichalcogenides (TMDCs) provide a fascinating discovery platform for strong light-matter interaction effects in the visible spectrum at ambient conditions. While most of the work has focused on hybridizing…

Applied Physics · Physics 2021-05-04 Masoud Taleb , Fatemeh Davoodi , Florian Diekmann , Kai Rossnagel , Nahid Talebi

The photoluminescence (PL) spectrum of transition metal dichalcogenides (TMDs) shows a multitude of emission peaks below the bright exciton line and not all of them have been explained yet. Here, we study the emission traces of…

The adsorption of carbon-conjugated molecules represents an established route to tune the electronic and optical properties of transition metal dichalcogenide (TMDC) monolayers. Here, we demonstrate from first principles that such a…

Materials Science · Physics 2023-11-30 Juan Pablo Guerrero-Felipe , Ana M. Valencia , . C. Cocchi

Transition metal dichalcogenides (TMDs) are layered semiconductors with indirect band gaps comparable to Si. These compounds can be grown in large area, while their gap(s) can be tuned by changing their chemical composition or by applying a…

Molybdenum disulfide (MoS2) is a layered material of transition metal dichalcogenides (TMDCs) with a high refractive index in the visible and infrared spectral range. Therefore, by constructing MoS2 into dielectric nanoresonators, one can…

We study the optical behaviour of an arrangement in which the interface between a linear and non-linear dielectric media is covered by an embedded mono-layer of transition metal dichalcogenides (TMDC). The optical behaviour is qualitatively…

Materials Science · Physics 2016-06-08 Parijat Sengupta , Shaloo Rakheja , Enrico Bellotti
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