Diffusion of excitons in a two-dimensional fermi sea of free charges

K Wagner, ZA Iakovlev, JD Ziegler, M Cuccu… - Nano Letters, 2023 - ACS Publications
Propagation of light-emitting quasiparticles is of central importance across the fields of
condensed matter physics and nanomaterials science. We experimentally demonstrate …

Nonlinear and negative effective diffusivity of interlayer excitons in moiré-free heterobilayers

E Wietek, M Florian, J Göser, T Taniguchi… - Physical Review Letters, 2024 - APS
Interlayer exciton diffusion is studied in atomically reconstructed MoSe 2/WSe 2
heterobilayers with suppressed disorder. Local atomic registry is confirmed by characteristic …

Diffusion of fast and slow excitons with an exchange in quasi-two-dimensional systems

OP Adejumobi, VN Mantsevich, VV Palyulin - Physical Review E, 2024 - APS
By means of analytical calculations and numerical simulations, we study the diffusion
properties in quasi-two-dimensional structures with two exciton subsystems with an …

Non-linear and negative effective diffusivity of optical excitations in moir\'e-free heterobilayers

E Wietek, M Florian, JM Göser, T Taniguchi… - arXiv preprint arXiv …, 2023 - arxiv.org
Interlayer exciton diffusion is studied in atomically-reconstructed MoSe2/WSe2
heterobilayers with suppressed disorder. Local atomic registry is confirmed by characteristic …

Exciton transport in atomically thin semiconductors

E Malic, R Perea-Causin, R Rosati, D Erkensten… - nature …, 2023 - nature.com
Atomically thin semiconductors have been in the center of one of the most active research
fields. Here, we discuss the main challenges in exciton transport that is crucial for …

Negative diffusion of excitons in quasi-two-dimensional systems

AA Kurilovich, VN Mantsevich, AV Chechkin… - Physical Chemistry …, 2024 - pubs.rsc.org
We show how two different mobile-immobile type models explain the observation of
negative diffusion of excitons reported in experimental studies in quasi-two-dimensional …

The Influence of Internal Interfaces on Charge‐Carrier Diffusion in Semiconductor Heterostructures

N Mengel, L Gümbel, P Klement, M Fey… - … status solidi (b), 2023 - Wiley Online Library
The ongoing miniaturization of semiconductor devices renders charge‐carrier transport
along interfaces increasingly important. The characteristic length scales in state‐of‐the‐art …

Electromagnetic field assisted exciton diffusion in moir\'e superlattices

AM Shentsev, MM Glazov - arXiv preprint arXiv:2409.04284, 2024 - arxiv.org
We study exciton energy spectrum and their propagation in moir\'e superlattices formed in
transition metal dichalcogenide heterobilayers. In such structures, as a result of weak …

Energy shifts and broadening of excitonic resonances in electrostatically-doped semiconductors

H Dery, C Robert, SA Crooker, X Marie… - arXiv preprint arXiv …, 2024 - arxiv.org
Tuning the density of resident electrons or holes in semiconductors provides crucial insight
into the composition of excitonic complexes that are observed as absorption or …

Ultrafast exciton transport in van der Waals heterostructures

MM Glazov, RA Suris - arXiv preprint arXiv:2403.19571, 2024 - arxiv.org
Excitons in van der Waals heterostructures based on atomically thin transition metal
dichalcogenides are considered as potential candidates for the formation of a superfluid …