Technische Universität Dresden

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Research data repository of Dresden University of Technology.

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    Open Access
    Amplification of Negative Gas Adsorption in a multivariate framework
    (Technische Universität Dresden, 2024-06-20) Bon, Volodymyr
    The approach of multivariate MOFs was used to fine-tune the mechanical properties of the flexible framework DUT-49. In situ XRD, NMR and physisorption studies showed that the partial incorporation of a more rigid linker into DUT-49 framework enables a stabilization of the metastable open pore phase which led to a twofold amplification of the expelled gas amount upon “Negative Gas Adsorption” transition.
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    Open Access
    Artificial data set for benchmarking pre-processing algorithms for distributed fiber optic strain data
    (Technische Universität Dresden, 2024-11-28) Richter, Bertram
    Distributed strains sensing (DSS) with distributed fiber optic sensors (DFOS) has great potential for structural health monitoring (SHM). Raw DSS data might contain different types of disturbances caused by the measurement principle of DFOS. The disturbance types are (i) misreadings called strain reading anomolies (SRA), (ii) missing values called dropouts, and (iii) noise. Hence, pre-processing (the process of removing or reducing the disturbances) is key for a reliable evaluation of DSS data. Many different pre-processing approaches/algorithms exist. The assessment, how well an algorithms performs in removing the disturbances is done by benchmarking. This judgement requires a known "ground truth" (disturbance free signal). As all measurements show noise, this benchmarking needs to be carried out on an artifical data set. The aim of this benchmark data set is to simulate realistic DSS data. The characteristics of the benchmark data set is described in in detail in the accompanying paper available at [10.3390/s24237454](https://doi.org/10.3390/s24237454). To simulate different use cases, the data set contains five scenarios. SRAs, dropouts and noise are simulated using simple random processes. The values for SRAs are extracted from the data set available at [10.25532/OPARA-671](https://doi.org/10.25532/OPARA-671). This dataset is available at [10.25532/OPARA-644](https://doi.org/10.25532/OPARA-644) and accompanies the paper [10.3390/s24237454](https://doi.org/10.3390/s24237454).
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    Open Access
    Bistable Organic Electrochemical Transistors: Enthalpy vs. Entropy
    (Technische Universität Dresden, 2024-07-03) Bongartz, Lukas
    Organic electrochemical transistors (OECTs) serve as the foundation for a wide range of emerging applications, from bioelectronic implants and smart sensor systems to neuromorphic computing. Their ascent originates from a distinctive switching mechanism based on the coupling of electronic and ionic charge carriers, which gives rise to a multitude of unique characteristics. Notably, various OECT systems have been reported with significant hysteresis in their transfer curve. While being a feature sought after as non-volatile memory in neuromorphic systems, no universal explanation has yet been given for its physical origin, impeding its advanced implementation. Herein, we present a thermodynamic framework that readily elucidates the emergence of bistable OECT operation through the interplay of enthalpy and entropy. We validate our model through three experimental approaches, covering temperature-resolved characterizations, targeted material manipulation, and thermal imaging. In this context, we demonstrate the exceptional scenario where the subthreshold swing deviates from Boltzmann statistics, and we provide an alternate view on existing data in literature, which further supports our model. Finally, we leverage the bistability in form of a single-OECT Schmitt trigger, thus compacting the complexity of a multi-component circuit into a single device. These insights offer a revised understanding of OECT physics and promote their application in non-conventional computing, where symmetry-breaking phenomena are pivotal to unlock novel paradigms.
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    Open Access
    Correlation Clustering of Organoid Images: Data
    (Technische Universität Dresden, 2024-08-23) Presberger, Jannik; Keshara, Rashmiparvathi; Stein, David; Kim, Yung Hae; Grapin-Botton, Anne; Andres, Bjoern
    The data considered in: J. Presberger, R. Keshara, D. Stein, Y. H. Kim, A. Grapin-Botton and B. Andres. Correlation Clustering of Organoid Images. In: GCPR 2024.
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    Open Access
    Data corresponding to publication: "Disorder effects in spiral spin liquids: Long-range spin textures, Friedel-like oscillations, and spiral spin glasses" by P. M. Consoli et al. (2024)
    (Technische Universität Dresden, 2024-12-03) Vojta, Matthias
    This dataset contains the data and scripts corresponding to the figures in the publication P. M. Consoli and M. Vojta, "Disorder effects in spiral spin liquids: Long-range spin textures, Friedel-like oscillations, and spiral spin glasses", Phys. Rev. B 109, 064423 (2024), https://doi.org/10.1103/PhysRevB.109.064423
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    Open Access
    Data corresponding to publication: "Kondo screening and coherence in kagome local-moment metals: Energy scales of heavy fermions in the presence of flat bands " by C. Kourris et al. (2024)
    (Technische Universität Dresden, 2024-12-03) Vojta, Matthias
    This dataset contains the data and scripts corresponding to the figures in the publication C. Kourris and M. Vojta, "DKondo screening and coherence in kagome local-moment metals: Energy scales of heavy fermions in the presence of flat bands", Phys. Rev. B 108, 235106 (2024), https://doi.org/10.1103/PhysRevB.108.235106
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    Open Access
    Data corresponding to the publication "Optical and acoustic plasmons in the layered material Sr2RuO4"
    (Technische Universität Dresden, 2025-03-21) Schultz, Johannes; Lubk, Axel; Jerzembeck, Fabian; Kikugawa, Naoki; Knupfer, Martin; Wolf, Daniel; Büchner, Bernd; Fink, Jörg
    We use momentum-dependent electron energy-loss spectroscopy in transmission to study collective charge excitations in the layer metal Sr2RuO4. This metal has a transition from a perfect Fermi liquid below T~30 K into a "strange" metal phase above T~800 K. We cover a complete range between in-phase and out-of-phase oscillations. Outside the classical range of electron-hole excitations, leading to a Landau damping, we observe well-defined plasmons. The optical (acoustic) plasmon due to an in-phase (out-of-phase) charge oscillation of neighbouring layers exhibits a quadratic (linear) positive dispersion. Using a model for the Coulomb interaction of the charges in a layered system, it is possible to describe the range of optical plasmon excitations at high energies in a mean-field random phase approximation without taking correlation effects into account. In contrast, resonant inelastic X-ray scattering data show at low energies an enhancement of the acoustic plasmon velocity due to correlation effects. This difference can be explained by an energy dependent effective mass which changes from ~ 3.5 at low energy to 1 at high energy near the optical plasmon energy. There are no signs of over-damped plasmons predicted by holographic theories.
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    Open Access
    Data for "An Elephant Under the Microscope: Analyzing the Interaction of Optimizer Components in PostgreSQL"
    (Technische Universität Dresden, 2025-01-23) Bergmann, Rico
    This dataset presents benchmark data for the SIGMOD 2025 publication "An Elephant Under the Microscope: Analyzing the Interaction of Optimizer Components in PostgreSQL" (https://doi.org/10.1145/3709659). The dataset spans multiple different experiments, each analyzing how different components of relational query optimizers influence each other and how they perform when faced with faulty input. For each experiment a dedicated ZIP file is available. These files contain READMEs with technical information (e.g. table columns). Detailed descriptions of the individual experiments can be found in the actual publication, as well as in the code repository that provides the actual experiment scripts for reproducibility (available at https://github.com/db-tu-dresden/SIGMOD25-PostgreEval).
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    Open Access
    Data for "Continuous order-to-order quantum phase transitions from fixed-point annihilation"
    (Technische Universität Dresden, 2025-01-31) Moser, David J.; Janssen, Lukas
    The archive contains the data used to construct Fig. 2, Fig. 3, and Fig. S5 of the manuscript "Continuous order-to-order quantum phase transitions from fixed-point annihilation" by David J. Moser and Lukas Janssen [arXiv:2412.06890]. The work exploits mean-field theory and renormalization group approaches to unveil several examples of continuous order-to-order quantum phase transitions from fixed-point annihilation.
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    Open Access
    Data for "Exposing the odd-parity superconductivity in CeRh2As2 with hydrostatic pressure"
    (Technische Universität Dresden, 2024-12-03) Semeniuk, Konstantin; Pfeiffer, Meike; Landaeta, Javier F.; Nicklas, Michael; Geibel, Christoph; Brando, Manuel; Khim, Seunghyun; Hassinger, Elena
    This archive contains the data of primarily experimental origin that are plotted in the main and supplementary figures of the article "Exposing the odd-parity superconductivity in CeRh2As2 with hydrostatic pressure" by M. Pfeiffer et al., published in Physical Review B 110, L100504 (2024). The data are provided it the form of text files, and the file names indicate where the data appear in the publication. These files contain tab-separated columns of numerical values. The first row of each file reads the column names. Rounding errors may give rise to some negligible inconsistencies between the data in this archive and the article. The figure data that come from other publications are not provided here. When more than one figure contain the same set of data, it is generally only provided once, in the folder corresponding to the first figure in which that set of data appears. Additional data and details related to the article can be obtained upon a reasonable request from the following authors: Konstantin Semeniuk (konstantin.semeniuk@cpfs.mpg.de), Elena Hassinger (elena.hassinger@tu-dresden.de).
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    Open Access
    Data for "Ferrimagnetism from triple-q order in Na2Co2TeO6"
    (Technische Universität Dresden, 2024-11-14) Francini, Niccolò; Janssen, Lukas
    The archive contains the data used to construct Fig. 3, Fig. 4, and Fig. 5(a) of the paper "Ferrimagnetism from triple-q order in Na2Co2TeO6" by N. Francini and L. Janssen [arXiv:2409.12234]. The work uses classical Monte-Carlo simulations to study the ferrimagnetic response of two different extended Kitaev-Heisenberg models realizing two different ground states: a collinear zigzag state and a noncollinear triple-q state.
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    Open Access
    Data for "Pressure-Tuned Quantum Criticality in the Locally Noncentrosymmetric Superconductor CeRh2As2"
    (Technische Universität Dresden, 2024-12-03) Pfeiffer, Meike; Semeniuk, Konstantin; Landaeta, Javier F.; Borth, Robert; Geibel, Christoph; Nicklas, Michael; Brando, Manuel; Khim, Seunghyun; Hassinger, Elena
    This archive contains the data of experimental origin plotted in the main and supplementary figures of the article "Pressure-Tuned Quantum Criticality in the Locally Noncentrosymmetric Superconductor CeRh2As2" by M. Pfeiffer et al., published in Physical Review Letters 133, 126506 (2024). The data are provided it the form of text files, and the file names indicate where the data appear in the publication. These files contain tab-separated columns of numerical values. The first row of each file reads the column names. Rounding errors may give rise to some negligible inconsistencies between the data in this archive and the article. Additional data and details related to the article can be obtained upon a reasonable request from the following authors: Konstantin Semeniuk (konstantin.semeniuk@cpfs.mpg.de), Elena Hassinger (elena.hassinger@tu-dresden.de).
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    Open Access
    Data for "Twist-tuned quantum criticality in moiré bilayer graphene"
    (Technische Universität Dresden, 2025-01-09) Biedermann, Jan; Janssen, Lukas
    The archive contains the data used to construct Figs. 1-4 of the paper "Twist-tuned quantum criticality in moiré bilayer graphene" by J. Biedermann and L. Janssen [arXiv:2412.16042]. The work uses self-consistent Hartree-Fock calculations to compute the phase diagram of moiré bilayer graphene as a function of the twist angle between the layers.
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    Open Access
    Data for Simon Nogo_NFL_nCREANN
    (Technische Universität Dresden, 2025-03-13) Elmers, Julia Kristina; Mückschel, Moritz; Akgün, Katja; Ziemssen, Tjalf; Beste, Christian
    The data set includes raw behavioral data (logfiles) from the Simon Nogo task, raw preprocessed EEG data, and NFL data of 55 healthy participants. Further, all customized scripts for the analyses are provided.
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    Open Access
    Data for Stability of Bogoliubov Fermi surfaces within BCS theory
    (Technische Universität Dresden, 2024-11-06) Bhattacharya, Ankita; Timm, Carsten
    This archive contains the data plotted in the paper A. Bhattacharya and C. Timm, Stability of Bogoliubov Fermi surfaces within BCS theory, Phys. Rev. B 107, L220501 (2023) and its Supplemental Material. For this paper, the superconducting gap and the energy gain in the superconducting state relative to the normal state were obtained by solving the inverse BCS gap equation. The required integrals over the Brillouin zone were performed using global-adaptive integrations with high precision in Mathematica.
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    Open Access
    Data of an online-survey about the barriers in the implementation of evidence based teaching concepts at german universities in physics
    (Technische Universität Dresden, 2024-10-02) Kaltofen, Tim; Prestel, Thomas
    Data contains anonymous answers to a set of questions about knowledge and use of evidece based teaching concepts by german lectueres in lectures and tutorials. The data includes assessments of the obstacles to implement these teaching concepts. Additionally, possible support offerings were inquired about. Demographic data is listed at the end of the survey.
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    Open Access
    Data set of the energy demand and associated movement of automated storage and retrieval machines
    (Technische Universität Dresden, 2024-06-24) Siegel, Armin
    The database consists of measurement data from multiple pallet racking storage and retrieval machines (SRMs) and the devices from automatic small parts storage systems (ASPS). The power consumption and the distance traveled by the systems were measured during several measurement operations. There are isolated measurements for the travel and hoist mechanisms of the systems. For power measurement, the Hioki 3193 Power HiTester was used. To capture the distance to the computer, a Dimetix laser distance sensor, model FLS-C 10, was employed. To account for all components and their losses, the power was measured at the aisle connection point. Accordingly, all components of the SRMs, including their losses, were recorded. The measurement setup and detailed methodology are described in the dissertation "Minimierung der Netzanschlussleistung und des Energiebedarfs von Regalbediengerät-Lagersystemen" / "Minimization of grid connection power and energy demand in automated storage and retrieval systems" by Armin Siegel. In addition to the database, which is provided as a compressed SQL file, example queries in Matlab (R2017b) and Python 3 are included.
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    Open Access
    Data STM NBD
    (Technische Universität Dresden, 2024-07-15) Moresco, Francesca
    Supplementary raw STM data to the publication "Direct imaging of a norbornadiene (NBD) derivative adsorbed on the Au(111) surface"
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    Open Access
    Data STM rotor and car
    (Technische Universität Dresden, 2024-09-11) Moresco, Francesca
    Supplementary raw STM data to the publication "A Nanocar and Rotor in One Molecule" https://doi.org/10.48550/arXiv.2305.06791
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    Open Access
    Data Underpinning: Correlated proton disorder in the crystal structure of the double hydroxide perovskite CuSn(OH)₆
    (Technische Universität Dresden, 2025-01-16) Peets, Darren Campbell; Kulbakov, Anton A.; Häußler, Ellen; Parui, Kaushick K.; Mannathanath Chakkingal, Aswathi; Pavlovskii, Nikolai S.; Pomjakushin, Vladimir Yu.; Cañadillas-Delgado, Laura; Hansen, Thomas; Doert, Thomas; Inosov, Dmytro S.
    This contains the data underpinning our paper on CuSn(OH)₆. The abstract of the article is reproduced here: CuSn(OH)6 is a quantum spin system from the family of magnetic double perovskite hydroxides, having a frustrated magnetic sublattice. It is also known as the natural mineral mushistonite, whose crystal structure has remained elusive for decades. Here we employ x-ray and neutron powder diffraction to solve the crystal structure of CuSn(OH)6 and propose a structure model in the orthorhombic space group Pnnn with correlated proton disorder. The occupation of the hydrogen sites in the structure is constrained by “ice rules” similar to those known for water ice. The resulting frustration of the hydrogen bonding network is likely to have a complex and interesting interplay with the strong magnetic frustration expected in the face-centred magnetic sublattice. Structural distortions, which are quite pronounced in Cu2+ compounds due to the Jahn-Teller effect, partially alleviate both types of frustration. We also show that hydrostatic pressure tends to suppress proton disorder through a sequence of proton-ordering transitions, as some of the split hydrogen sites merge already at 1.75 GPa while others show a tendency toward possible merging at higher pressures.