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Dataset results
67 results for “excitons”
Células de Generación de Múltiples Excitones
<p>Problemas encontrados en el modelo teórico de células de generación de múltiples excitones</p>
Data related to "Spin-correlated exciton-polaritons in a van der Waals magnet"
<p>Optical spectroscopy data and numerical calculations related to the manuscript "Spin-correlated exciton-polaritons in a van der Waals magnet" by Florian Dirnberger <em>et al.</em> </p>
Scripts for theory figures in: Spatial Correlations Drive Long-Range Transport and Trapping of Excitons in Single H-Aggregates: Experiment and Theory
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Strain fingerpringting of exciton valley character in 2D semiconductors
<p>Raw data which are used to generate the figures in the publication 'Strain fingerpringting of exciton valley character in 2D semiconductors'.</p> <p>Abstract of the paper:</p> <p>Intervalley excitons with electron and hole wavefunctions residing in different valleys determine the long-range transport and dynamics observed in many semiconductors. However, these excitons with vanishing oscillator strength do not directly couple to light and, hence, remain largely unstudied. Here, we develop a simple nanomechanical technique to control the energy hierarchy of valleys via their contrasting response to mechanical strain. We use our technique to discover previously inaccessible intervalley excitons associated with K, Γ, or Q valleys in prototypical 2D semiconductors WSe2 and WS2. We also demonstrate a new brightening mechanism, rendering an otherwise “dark” intervalley exciton visible via strain-controlled hybridization with an intravalley exciton. Moreover, we classify various localized excitons from their distinct strain response and achieve large tuning of their energy. Overall, our valley engineering approach establishes a new way to identify intervalley excitons and control their interactions in a diverse class of 2D systems.</p>
Data for "Direct, Indirect, and Self-Trapped Excitons in Cs2AgBiBr6"
<p>Structures of the unit cell and polymorphous supercell of Cs2AgBiBr6 and the self-trapped exciton in the material.</p>
Magneto-Stark and Zeeman effect as origin of second harmonic generation of excitons in Cu2O
<p>Dataset of the publication “Magneto-Stark and Zeeman effect as origin of second harmonic generation of excitons in Cu2O“, (https://doi.org/10.1103/PhysRevB.101.115201). The xlsx file includes the measured datapoints on which the plots shown in figures 10-18 of the main text are based.</p>
Analysis of the nonlinear optical response of excitons in type-I and type-II quantum wells including many-body correlations
<p>Dataset of the publication “Analysis of the nonlinear optical response of excitons in type-I and type-II quantum wells including many-body correlations”, A. Trautmann, M. Stein, F. Schäfer, D. Anders, C. Ngo, J. T. Steiner, M. Reichelt, S. Chatterjee, and T. Meier, Proc. SPIE 12419, Ultrafast Phenomena and Nanophotonics XXVII, 124190A (2023) ( <a href="https://doi.org/10.1117/12.2650169">https://doi.org/10.1117/12.2650169</a> ). The zip file includes the data on which the plots are based.</p>
Terahertz-induced anomalous currents following the optical excitation of excitons in semiconductor quantum wells
<p>Dataset of the publication “Terahertz-induced anomalous currents following the optical excitation of excitons in semiconductor quantum wells“, C. Ngo, S. Priyadarshi, H. T. Duc, M. Bieler, and T. Meier, Proc. SPIE 12419, Ultrafast Phenomena and Nanophotonics XXVII, 124190G (2023) ( <a href="https://doi.org/10.1117/12.2646022">https://doi.org/10.1117/12.2646022</a> ). The zip file includes the data on which the plots are based.<br> </p>
Data for "Minimizing non-radiative decay in molecular aggregates through control of excitonic coupling"
<p>Data for "Minimizing non-radiative decay in molecular aggregates through control of excitonic coupling". </p> <p>"Adding 'FIG.5c-20230615.npz' to match the revised manuscript" - Updated 2023.06.15</p>
Data for 'Exciton transport in a germanium quantum dot ladder' by Tzu-Kan Hsiao et al.
<p>Data for 'Exciton transport in a germanium quantum dot ladder' by Tzu-Kan Hsiao et al.</p>
Dataset for "Room temperature wavelike exciton transport in a van der Waals superatomic semiconductor"
<p>Data and code necessary to reproduce the figures in the main text and supplementary materials of article "Room temperature wavelike exciton transport in a van der Waals superatomic semiconductor"</p>
Excitonic anomalous currents in semiconductor quantum wells
<p>Dataset of the publication “Excitonic anomalous currents in semiconductor quantum wells”, by C. Ngo, S. Priyadarshi, H. T. Duc, M. Bieler, and T. Meier, published in Physical Review B <strong>108</strong>, 165302 (2023) ( https://doi.org/10.1103/PhysRevB.108.165302 )<br> The zip file includes a brief description and the data on which the plots of figures 2 – 10 are based, and the codes used for the numerical evaluations (k.p and semiconductor Bloch equations).</p>
Exciton-to-trion conversion as a control mechanism for valley polarization in room-temperature monolayer WS2
<p>Dataset accompanying "Exciton-to-trion conversion as a control mechanism for valley polarization in room-temperature monolayer WS2"</p>
Data from: The influence of disorder on the exciton spectra in two-dimensional structures
<p>We study the joint effect of disorder and Coulomb interaction screening on the exciton spectra in two-dimensional (2D) structures. These can be van der Waals structures or heterostructures of organic (polymeric) semiconductors as well as inorganic substances like transition metal dichalcogenides. We consider 2D screened hydrogenic problem with Rytova - Keldysh interaction by means if so-called fractional Scrodinger equation. Our main finding is that above synergy between screening and disorder either destroys the exciton (strong screening) or promote the creation of a bound state, leading to its collapse in the extreme case. Our second finding is energy levels crossing, i.e. the degeneracy (with respect to index µ) of the exciton eigenenergies at certain discrete value of screening radius. Latter effects may also be related to the quantum manifestations of chaotic exciton behavior in above 2D semiconductor structures. Hence, they should be considered in device applications, where the interplay between dielectric screening and disorder is important.</p>
Data from: Nature of the optical band shapes in polymethine dyes and H-aggregates: dozy chaos and excitons. Comparison with dimers, H*- and J-aggregates
Results on the theoretical explanation of the shape of optical bands in polymethine dyes, their dimers and aggregates are summarized. The theoretical dependence of the shape of optical bands for the dye monomers in the vinylogous series in line with a change in the solvent polarity is considered. A simple physical (analytical) model of the shape of optical absorption bands in H-aggregates of polymethine dyes is developed based on taking the dozy-chaos dynamics of the transient state and the Frenkel exciton effect in the theory of molecular quantum transitions into account. As an example, the details of the experimental shape of one of the known H-bands are well reproduced by this analytical model under the assumption that the main optical chromophore of H-aggregates is a tetramer resulting from the two most probable processes of inelastic binary collisions in sequence: first, monomers between themselves, and then, between the resulting dimers. The obtained results indicate that in contrast with the compact structure of J-aggregates (brickwork structure), the structure of H-aggregates is not the compact pack-of-cards structure, as stated in the literature, but a loose alternate structure. Based on this theoretical model, a simple general (analytical) method for treating the more complex shapes of optical bands in polymethine dyes in comparison with the H-band under consideration is proposed. This method mirrors the physical process of molecular aggregates forming in liquid solutions: aggregates are generated in the most probable processes of inelastic multiple binary collisions between polymethine species generally differing in complexity. The results obtained are given against a background of the theoretical results on the shape of optical bands in polymethine dyes and their aggregates (dimers, H*- and J-aggregates) previously obtained by V.V.E.
Dataset for: Unraveling the Optical Signatures of Polymeric Carbon Nitrides: Insights into Stacking-Induced Excitonic Transition
<p>This file contains a set of input and output data for simulations.</p>
2D Rydberg Exciton Array
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Data for "Topologically localized excitons in single graphene nanoribbons"
<p>Data for : Topologically localized excitons in single graphene nanoribbons</p>
Observation of room temperature excitons in an atomically thin topological insulator
<p>Here you can find some data and information concerning the theoretical side of the paper "Observation of room temperature excitons in an atomically thin topological insulator", published in Nature Communications. </p> <p>While some initial results have been obtained using the DFT package VASP, the main core of the work (GW + BSE) is based on the packages Quantum Espresso and YAMBO.</p> <p>The data that you find will then have an according format. </p>
Magnetically-dressed CrSBr exciton-polaritons in ultrastrong coupling regime
<p>Source data for: Magnetically-dressed CrSBr exciton-polaritons in ultrastrong coupling regime</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.