41 citations · 182 across the 11 of their papers we have counts for
11 papers
Non equilibrium anisotropic excitons in atomically thin ReS
J. M. Urban, M. Baranowski, A. Kuc +10
We present a systematic investigation of the electronic properties of bulk and few layer ReS van der Waals crystals using low temperature optical spectroscopy. Weak photolumine…
Intervalley Scattering of Interlayer Excitons in a MoS/MoSe/MoS Heterostructure in High Magnetic Field
Alessandro Surrente, Lukasz Klopotowski, Nan Zhang +9
Degenerate extrema in the energy dispersion of charge carriers in solids, also referred to as valleys, can be regarded as a binary quantum degree of freedom, which can potentially…
Engineering the hole confinement for CdTe-based quantum dot molecules
Ł. Kłopotowski, P. Wojnar, S. Kret +4
We demonstrate an efficient method to engineer the quantum confinement in a system of two quantum dots grown in a vertical stack. We achieve this by using materials with a differen…
Optical signatures of spin dependent coupling in semimagnetic quantum dot molecules
Ł. Kłopotowski, P. Wojnar, Ł. Cywiński +5
We present photoluminescence studies of CdTe and CdMnTe quantum dots grown in two adjacent layers. We show that when the dots are 8 nm apart, their magnetooptical properties - Zeem…
Optical study of electron-electron exchange interaction in CdTe/ZnTe quantum dots
T. Kazimierczuk, T. Smoleński, J. Kobak +7
We present an experimental study of electron-electron exchange interaction in self-assembled CdTe/ZnTe quantum dots based on the photoluminescence measurements. The character and s…
Influence of exciton spin relaxation on the photoluminescence spectra of semimagnetic quantum dots
Ł. Kłopotowski, Ł. Cywiński, M. Szymura +8
We present a comprehensive experimental and theoretical studies of photoluminescence of single CdMnTe quantum dots with Mn content x ranging from 0.01 to 0.2. We distinguish three…
Tuning the inter-shell splitting in self-assembled CdTe quantum dots
Krzysztof Kukliński, Łukasz Kłopotowski, Krzysztof Fronc +8
We present photoluminescence studies of highly excited single self--assembled CdTe quantum dots under continuous--wave and pulsed excitations. We observe appearance of emission ban…
Inter-shell exchange interaction in CdTe/ZnTe quantum dots: magneto-photoluminescence of X, X2- and XX-
Tomasz Kazimierczuk, Tomasz Smolenski, Mateusz Goryca +7
We present a comprehensive photoluminescence study of exchange interaction in self-assembled CdTe/ZnTe quantum dots. We exploit the presence of multiple charge states in the photol…
Stark Spectroscopy and Radiative Lifetimes in Single Self-Assembled CdTe Quantum Dots
Łukasz Kłopotowski, Valia Voliotis, Arkadiusz Kudelski +8
We present studies on Coulomb interactions in single self-assembled CdTe quantum dots. We use a field effect structure to tune the charge state of the dot and investigate the impac…
Dynamics of Charge Leakage From Self-assembled CdTe Quantum Dots
Łukasz Kłopotowski, Mateusz Goryca, Tomasz Kazimierczuk +4
We study the leakage dynamics of charge stored in an ensemble of CdTe quantum dots embedded in a field-effect structure. Optically excited electrons are stored and read out by a pr…
Influence of Trapping on the Exciton Dynamics of Al_xGa_1-xAs Films
A. Amo, M. D. Martin, L. Klopotowski +3
We present a systematic study on the exciton relaxation in high purity AlGaAs epilayers. The time for the excitonic photoluminescence to reach its maximum intensity (t_max) shows a…