3D Localized Trions in Monolayer WSe2 in a Charge Tunable van der Waals Heterostructure

C Chakraborty, L Qiu, K Konthasinghe… - Nano Letters, 2018‏ - ACS Publications
Monolayer transition metal dichalcogenides (TMDCs) have recently emerged as a host
material for localized optically active quantum emitters that generate single photons. Here …

Excitons

KW Böer, UW Pohl - Semiconductor physics, 2023‏ - Springer
Optical band-to-band absorption can produce an electron and a hole in close proximity
which attract each other via Coulomb interaction and can form a hydrogen-like bond state …

Vanishing fine structure splitting in highly asymmetric InAs/InP quantum dots without wetting layer

M Zieliński - Scientific Reports, 2020‏ - nature.com
Contrary to simplified theoretical models, atomistic calculations presented here reveal that
sufficiently large in-plane shape elongation of quantum dots can not only decrease, but even …

Exploiting underlying crystal lattice for efficient computation of coulomb matrix elements in multi-million atoms nanostructures

PT Różański, M Zieliński - Computer Physics Communications, 2023‏ - Elsevier
Atomistic modeling of nanostructures often leads to computationally challenging problems
involving millions of atoms and tens of thousands of Coulomb matrix elements. In our …

Linear scaling approach for atomistic calculation of excitonic properties of 10-million-atom nanostructures

PT Różański, M Zieliński - Physical Review B, 2016‏ - APS
Numerical calculations of excitonic properties of novel nanostructures, such as nanowire
and crystal phase quantum dots, must combine atomistic accuracy with an approachable …

Mechanism and dynamics of biexciton formation from a long-lived dark exciton in a CdTe quantum dot

T Smoleński, T Kazimierczuk, M Goryca, P Wojnar… - Physical Review B, 2015‏ - APS
We study the biexciton formation process in a single CdTe/ZnTe quantum dot. Consistently
with previous studies, we find subquadratic dependence of the biexciton photoluminescence …

[HTML][HTML] Evolution of InAs quantum dots and wetting layer on GaAs (001): Peculiar photoluminescence near onset of quantum dot formation

R Kumar, Y Maidaniuk, SK Saha, YI Mazur… - Journal of Applied …, 2020‏ - pubs.aip.org
InAs quantum dots (QDs) have been grown on a GaAs (001) substrate in the subcritical
region of InAs coverage for transition from a 2-dimensional (2D) to a 3-dimensional growth …

Atomistic theory of excitonic fine structure in InAs/InP nanowire quantum dot molecules

M Świderski, M Zieliński - Physical Review B, 2017‏ - APS
Nanowire quantum dots have peculiar electronic and optical properties. In this work we use
atomistic tight binding to study excitonic spectra of artificial molecules formed by a double …

Efficient computation of coulomb and exchange integrals for multi-million atom nanostructures

PT Różański, M Zieliński - Computer Physics Communications, 2019‏ - Elsevier
Atomistic modeling of nanostructures such as quantum dots or nanowires often involves
numbers of atoms reaching and even exceeding well beyond 1 million. Such a large …

Magnetobiexciton in strongly oblate ellipsoidal quantum dot

YY Bleyan, DB Hayrapetyan - Physica B: Condensed Matter, 2022‏ - Elsevier
The theoretical investigation of biexciton in ellipsoidal quantum dot in the presence of the
magnetic field is done in the framework of the variational method. The dependencies of the …