AndreaBozzo/ceres-open-data-index huggingface dataset:
Thermodynamic Stability at the Two-Particle Level - Numerical results for the two-orbital Hubbard model (beta = 50 two-particle functions, additional results for U = 1.50)

Abstract:
              This dataset contains a part of the DMFT/QMC results for the example of the two-orbital Hubbard model shown in the article "Thermodynamic Stability at the Two-Particle Level". It contains additional statistically independent results (i.e. using multiple different PRNG seeds) for the two-particle Green's functions at inverse temperature beta = 50 and Hubbard interaction parameter U = 1.50. Other numerical results can be found in the main dataset listed under related identifiers and its other subdatasets.
            TechnicalRemarks:
              All data files are zstd-compressed HDF5 output files as generated by w2dynamics for worm-sampling calculations of the two-particle Green's functions of the auxiliary impurity problem of two-orbital Hubbard models on a Bethe lattice with density-density interaction with fixed ratios between the interaction coefficients at inverse temperature beta = 50 and Hubbard interaction parameter U = 1.50. The individual file names contain the chemical potential μ, e.g. '_mu1.33380_' for μ=1.3338, the letter 'u'(pward), 'd'(ownward), or 'i'(nstable) indicating a procedural detail that is related to the phase if the parameters of the solution are in the coexistence region (the corresponding phases are the insulating or strongly correlated metallic one, the weakly correlated metallic one, and the unstable metallic one respectively), and a PRNG seed index, e.g. '_s2_' for index 2. More detailed descriptions and instructions can be found in the included readme file or the technical remarks on the main dataset.
            Other:
              We are grateful for funding support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat (EXC 2147, Project ID 390858490) as well as through the Collaborative Research Center SFB 1170 ToCoTronics (Project ID 258499086).
            

Tags: continuous-time-quantum-monte-carlo, dynamische-molekularfeldtheorie, hubbard-modell, kondensierte-materie, metal-insulator-transitions, metall-isolator-phasenumwandlung, monte-carlo-simulation, phase-separation, starke-kopplung, strongly-correlated-electron-systems, thermodynamic-stability
Organization: open.bydata
1-Methyl-Naphthalin im Meerwasser 2001

Im Rahmen des gemeinsamen Bund/Länder-Messprogramms für die Nord- und Ostsee und weiterer Überwachungsprogramme wurde der Parameter "1-Methyl-Naphthalin im Meerwasser" im Meerwasser bestimmt.

Tags: 2001, bsh, bundesamt-für-seeschifffahrt-und-hydrographie, monitoring, nap1, naphthalin, national, nordsee, open-data, opendata, ostsee, wasser
Organization: Mobilithek
Remote Sensing Indicators: Normalized Difference Vegetation Index (NDVI)

Abstract:
              Predicted monthly Normalized Difference Vegetation Index (NDVI) dataset in a spatial resolution of 1 x 1 km based on MODIS and AVHRR datasets. For predicting the restrospective NDVI vaules the STARFM algorithm was utilized in a Python environment. All available months are packed into one .zip file which can be (i) downloaded and (ii) extracted using free and open standard software (e.g. 7-zip).
            

Tags: africa, normalized-difference-vegetation-index-ndvi, vegetation
Organization: open.bydata
Automatische Zählstellen auf der Autobahn A7 - 2003

Auf Deutschlands Autobahnen und außerörtlichen Bundesstraßen werden an automatischen Zählstellen alle Fahrzeuge permanent gezählt. Je nach eingesetztem Gerätetyp können bis zu neun Fahrzeugarten unterschieden werden. Die Daten werden von der Autobahn GmbH des Bundes (AdB) sowie den Bundesländern erhoben und der BASt monatlich übermittelt. Auf dieser Basis werden Jahresfahrleistungen und durchschnittliche tägliche Verkehrsstärken (DTV) berechnet. Die Daten bilden eine wichtige Grundlage für verkehrs- oder bautechnische Entscheidungen und Maßnahmen.
Dieser Datensatz enthält alle Werte sämtlicher Zählstellen an der Autobahn A7 im Jahr 2003.

[Quelle BASt](https://www.bast.de/DE/Verkehrstechnik/Fachthemen/v2-verkehrszaehlung/zaehl_node.html) - Stand 14.01.2026

Informationen der BASt zu den verwendeten Erfassungsarten und Abkürzungen:
-   [Erfassungsarten nach TLS (PDF)](https://www.bast.de/BASt_2017/DE/Verkehrstechnik/Fachthemen/v2-verkehrszaehlung/pdf-dateien/erfassungsarten.pdf?__blob=publicationFile)
-   [Abkürzungen und Datensatzbeschreibungen](https://www.bast.de/DE/Verkehrstechnik/Fachthemen/v2-verkehrszaehlung/abkuerzungen-daten.html)

Tags: 2003, a7, autobahn, lkw, pkw, verkehrszählung
Organization: open.bydata
Manipulating topology of quantum phase transitions by symmetry enhancement

Abstract:
              Processed data used for generating the figures of manuscript: "Manipulating topology of quantum phase transitions by symmetry enhancement" on arXiv: https://arxiv.org/abs/2410.05059. Please read the 'README' file.
            Other:
              We are grateful for funding support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat (EXC 2147, Project ID 390858490) as well as through the Collaborative Research Center SFB 1170 ToCoTronics (Project ID 258499086).
            

Tags: quantum-spin-hall-insulator, strongly-correlated-electrons, topology-in-quantum-phase-transitions
Organization: open.bydata
A functional clock in only two dorsal clock neurons is sufficient to restore the basal circadian activity pattern of Drosophila melanogaster

Abstract:
              Circadian clocks form complex networks to orchestrate the behavior and physiology of animals. Elucidating the organization of these clock networks is critical to understanding how circadian clocks achieve robust timing. Clock neurons have been best characterized in the model organism Drosophila melanogaster. At the early stages of development, Drosophila has a clock network consisting of only nine neurons per hemisphere. This set of clock neurons consists of lateral and dorsal neurons and persists in the adult fly, in which the clock network is greatly expanded to a total of ~240 neurons. The function of the early-born lateral clock neurons is well established in the adult fly. They control morning and evening activity and are responsible for circadian rhythmicity under constant conditions. Only recent studies have begun to dissect the function of the dorsal clock neurons. Using clock rescue experiments, we show here that a functional clock in only four of them, the DN1a, is sufficient to restore a bimodal locomotor activity pattern and rhythmic activity under constant conditions in the adult fly. This is achieved by CCHa1 signaling most likely to the lateral morning neurons, which are considered the main pacemakers of the clock, and by glutamate signaling to the lateral evening neurons. Interestingly, all the neurons involved are part of the early-born clock network, strongly suggesting that a core clock is already formed during early development. This set of clock neurons appears sufficient in the adult fly to drive the basal circadian activity pattern.
            

Tags: circadian-rhythm, dorsal-neurons, drosophila, neuropeptides, period
Organization: open.bydata
Remote Sensing Indicators: Forest Cover

Abstract:
              Predicted monthly forest cover dataset in a spatial resolution of 1 x 1 km based on MODIS and AVHRR datasets. For predicting the retrospective forest cover values the STARFM algorithm was utilized in a Python environment. All available months are packed into one .zip file which can be (i) downloaded and (ii) extracted using free and open standard software (e.g. 7-zip).
            

Tags: africa, forest-cover, vegetation
Organization: open.bydata
Bandwidth-controlled quantum phase transition between an easy-plane quantum spin Hall state and an 𝑠-wave superconductor

Abstract:
              Data to reproduce the results of the publication: Disha Hou, Yuhai Liu, Toshihiro Sato, Wenan Guo, Fakher F. Assaad, and Zhenjiu Wang. "Bandwidth-controlled quantum phase transition between an easy-plane quantum spin Hall state and an 𝑠-wave superconductor" Phys. Rev. B, 107:155107 , April 2023. arXiv:2207.04803, DOI: 10.1103/PhysRevB.107.155107.
            TechnicalRemarks:
              Please read the 'README.txt' file.
            Other:
              This research has been funded by the Deutsche Forschungsgemeinschaft (DFG) via the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat (EXC 2147, Project ID 390858490), the SFB1170 on Topological and Correlated Electronics at Surfaces and Interfaces(Project ID 258499086), and Grant No. SA 3986/1-1(Project ID 435049553, Local moments in spin-orbit coupled systems). The authors gratefully acknowledge the Gauss Centre for Supercomputing e.V. for funding this project by providing computing time on the GCS Supercomputer SUPERMUC-NG at the Leibniz Supercomputing Centre. The authors also acknowledge the National Natural Science Foundation of China under Grant No. 11947232, No. 12175015 and No. 11734002.
            

Tags: quantum-monte-carlo, quantum-phase-transition, quantum-spin-hall-insulator
Organization: open.bydata
Improving the CASTEP calculation of 13C solid-state NMR chemical shifts of fluorinated small molecules

Abstract:
              This data package contains folders of all GIPAW (CASTEP) calculations - geometry optimization as well as NMR parameter calculations - done for the two molecules efavirenz and ezetimibe, which are the basis for the corresponding manuscript. The parameters were systematically varied to ensure the best overlap between experiment and calculation.
            

Tags: castep, fluorinated-small-molecules, gipaw, solid-state-nmr
Organization: open.bydata
All-optical quality-control of indenene intercalation into graphene/SiC

Abstract:
              Raw data used for the manuscript: 'All-optical quality-control of indenene intercalation into graphene/SiC' published in Applied Physics Letter 2024. Please read the 'README' file.
            Other:
              We are grateful for funding support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat (EXC 2147, Project ID 390858490) as well as through the Collaborative Research Center SFB 1170 ToCoTronics (Project ID 258499086). e acknowledge financial support from the PNRR MUR Project PE0000023-NQSTI.
            

Tags: intercalated-indenene, quantum-spin-hall-insulator, raman-spectroscopy
Organization: open.bydata
Freezing the Moment: Monitoring Freezing Processes under MAS Conditions

Abstract:
              NMR spectroscopy under magic angle spinning (MAS) conditions can be employed to study the freezing of aqueous solutions and gel-like systems without the need for specialized equipment. This is attractive as one sample can be studied in its liquid and its solid form without changing the experimental setup. There are multiple areas which benefit from such an analysis. Here, we will thoroughly study the freezing process of various aqueous systems containing multiple NMR active nuclei (1H, 11B, 13C, 23Na, 79Br) to gain detailed insights into what are prerequisites, what problems one must be aware of and what limitations arise, how reproducible the measurements are and what additional information can be gained from them for different sample types. As a further aspect it will be shown how the described setup can be used for the study of aqueous systems in solution at sub-freezing conditions.
            

Tags: aggregation-state, freezing, solid-state-nmr
Organization: open.bydata
Phase transitions on the dark side of the Gross-Neveu model

Abstract:
              Raw Quantum Monte Carlo data and processed data to generate figures of the manuscript "Phase transitions on the dark side of the Gross-Neveu model" in https://arxiv.org/abs/2512.04626.
            Other:
              We are grateful for funding support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat (EXC 2147, Project ID 390858490) as well as under Grant No. AS 120/19-1 (Project No. 530989922).
            Other:
              Important remark: The data sheets in the directory "Figures/Figure\ 1" and "Figures/Figure\ 2" with the names "E_pot_L_6,9,12" and "S_Spin_L_6,9,12" are imperfect. The correct datasets can be extracted out of the raw data by running "analysis.ipynb" on the directory "scans".
            

Tags: __, gross-neveu-model, quantum-monte-carlo, strongly-correlated-electron-systems, symmtries-in-condensed-matter-systems
Organization: open.bydata
Edge Zeros and Boundary Spinons in Topological Mott Insulators

Abstract:
              This dataset contains the slave-rotor results for the Kane-Mele-Hubbard model presented in the publication. Each folder contains the data for a specific figure, provided as text files and the corresponding gnuplot scripts for creating the plots. Further information can be found in the readme files.
            Other:
              We are grateful for funding support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat (EXC 2147, Project ID 390858490) as well as through the Collaborative Research Center SFB 1170 ToCoTronics (Project ID 258499086).
            

Tags: kondensierte-materie, starke-kopplung, strongly-correlated-electrons, topological-insulators
Organization: open.bydata
Thermodynamic Stability at the Two-Particle Level - Numerical results for the two-orbital Hubbard model (beta = 50 two-particle functions, additional results for U = 1.4920 and U = 1.4930)

Abstract:
              This dataset contains a part of the DMFT/QMC results for the example of the two-orbital Hubbard model shown in the article "Thermodynamic Stability at the Two-Particle Level". It contains additional statistically independent results (i.e. using multiple different PRNG seeds) for the two-particle Green's functions at inverse temperature beta = 50 and Hubbard interaction parameters U = 1.4920 and U = 1.4930. Other numerical results can be found in the main dataset listed under related identifiers and its other subdatasets.
            TechnicalRemarks:
              All data files are zstd-compressed HDF5 output files as generated by w2dynamics for worm-sampling calculations of the two-particle Green's functions of the auxiliary impurity problem of two-orbital Hubbard models on a Bethe lattice with density-density interaction with fixed ratios between the interaction coefficients at inverse temperature beta = 50 and Hubbard interaction parameter U = 1.4920 or U = 1.4930. The individual file names contain the Hubbard-U interaction strength, e.g. '_U1.46_' for U=1.46, the chemical potential μ, e.g. '_mu1.33380_' for μ=1.3338, the letter 'u'(pward), 'd'(ownward), or 'i'(nstable) indicating a procedural detail that is related to the phase if the parameters of the solution are in the coexistence region (the corresponding phases are the insulating or strongly correlated metallic one, the weakly correlated metallic one, and the unstable metallic one respectively), and a PRNG seed index, e.g. '_s2_' for index 2. More detailed descriptions and instructions can be found in the included readme file or the technical remarks on the main dataset.
            Other:
              We are grateful for funding support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat (EXC 2147, Project ID 390858490) as well as through the Collaborative Research Center SFB 1170 ToCoTronics (Project ID 258499086).
            

Tags: continuous-time-quantum-monte-carlo, dynamische-molekularfeldtheorie, hubbard-modell, kondensierte-materie, metal-insulator-transitions, metall-isolator-phasenumwandlung, monte-carlo-simulation, phase-separation, starke-kopplung, strongly-correlated-electron-systems, thermodynamic-stability
Organization: open.bydata
Automatische Zählstellen auf der Autobahn A45 - 2020

Auf Deutschlands Autobahnen und außerörtlichen Bundesstraßen werden an automatischen Zählstellen alle Fahrzeuge permanent gezählt. Je nach eingesetztem Gerätetyp können bis zu neun Fahrzeugarten unterschieden werden. Die Daten werden von der Autobahn GmbH des Bundes (AdB) sowie den Bundesländern erhoben und der BASt monatlich übermittelt. Auf dieser Basis werden Jahresfahrleistungen und durchschnittliche tägliche Verkehrsstärken (DTV) berechnet. Die Daten bilden eine wichtige Grundlage für verkehrs- oder bautechnische Entscheidungen und Maßnahmen.
Dieser Datensatz enthält alle Werte sämtlicher Zählstellen an der Autobahn A45 im Jahr 2020.

[Quelle BASt](https://www.bast.de/DE/Verkehrstechnik/Fachthemen/v2-verkehrszaehlung/zaehl_node.html) - Stand 14.01.2026

Informationen der BASt zu den verwendeten Erfassungsarten und Abkürzungen:
-   [Erfassungsarten nach TLS (PDF)](https://www.bast.de/BASt_2017/DE/Verkehrstechnik/Fachthemen/v2-verkehrszaehlung/pdf-dateien/erfassungsarten.pdf?__blob=publicationFile)
-   [Abkürzungen und Datensatzbeschreibungen](https://www.bast.de/DE/Verkehrstechnik/Fachthemen/v2-verkehrszaehlung/abkuerzungen-daten.html)

Tags: 2020, a45, autobahn, lkw, pkw, verkehrszählung
Organization: open.bydata
Sublattice modulated superconductivity in the kagome Hubbard model

Abstract:
              We identify a superconducting order featuring spatial pair modulations on the kagome lattice subject to on-site Hubbard 𝑈 and nearest-neighbor 𝑉 interactions. Within our functional renormalization group analysis, this state appears with a concomitant 𝑑-wave superconducting (SC) instability at zero lattice momentum, where it distinguishes itself through intra-unit-cell modulations of the pairing function thus breaking the discrete space group symmetry. The relative weight of the sublattice modulated superconductor (SMS) and 𝑑-wave SC is influenced by the absolute interaction strength and coupling ratio 𝑉/𝑈. Parametrically adjacent to this domain at weak coupling, we find an intra-unit-cell modulated vestigial charge density wave and an 𝑠-wave SC instability. This dataset contains the numerical data shown in Figs. 4 and 5 of Phys. Rev. B 110, 024501. Further information is provided in the contained readme.
            Other:
              The work is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through Project-ID 258499086 - SFB 1170 and and through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter–ct.qmat Project-ID 390858490 - EXC 2147.
            

Tags: hubbard-model, kagomegitter, sublattice-modulation, supraleitung
Organization: open.bydata
Thermodynamic Stability at the Two-Particle Level - Numerical results for the two-orbital Hubbard model (beta = 50 two-particle functions, additional results for U = 1.46)

Abstract:
              This dataset contains a part of the DMFT/QMC results for the example of the two-orbital Hubbard model shown in the article "Thermodynamic Stability at the Two-Particle Level". It contains additional statistically independent results (i.e. using multiple different PRNG seeds) for the two-particle Green's functions at inverse temperature beta = 50 and Hubbard interaction parameter U = 1.46. Other numerical results can be found in the main dataset listed under related identifiers and its other subdatasets.
            TechnicalRemarks:
              All data files are zstd-compressed HDF5 output files as generated by w2dynamics for worm-sampling calculations of the two-particle Green's functions of the auxiliary impurity problem of two-orbital Hubbard models on a Bethe lattice with density-density interaction with fixed ratios between the interaction coefficients at inverse temperature beta = 50 and Hubbard interaction parameter U = 1.46. The individual file names contain the chemical potential μ, e.g. '_mu1.33380_' for μ=1.3338, the letter 'u'(pward), 'd'(ownward), or 'i'(nstable) indicating a procedural detail that is related to the phase if the parameters of the solution are in the coexistence region (the corresponding phases are the insulating or strongly correlated metallic one, the weakly correlated metallic one, and the unstable metallic one respectively), and a PRNG seed index, e.g. '_s2_' for index 2. More detailed descriptions and instructions can be found in the included readme file or the technical remarks on the main dataset.
            Other:
              We are grateful for funding support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat (EXC 2147, Project ID 390858490) as well as through the Collaborative Research Center SFB 1170 ToCoTronics (Project ID 258499086).
            

Tags: continuous-time-quantum-monte-carlo, dynamische-molekularfeldtheorie, hubbard-modell, kondensierte-materie, metal-insulator-transitions, metall-isolator-phasenumwandlung, monte-carlo-simulation, phase-separation, starke-kopplung, strongly-correlated-electron-systems, thermodynamic-stability
Organization: open.bydata
Heterogeneous Ta-dichalcogenide bilayer: heavy fermions or doped Mott physics?

Abstract:
              Controlling and understanding electron correlations in quantum matter is one of the most challenging tasks in materials engineering. In the past years a plethora of new puzzling correlated states have been found by carefully stacking and twisting two-dimensional van der Waals materials of different kind. Unique to these stacked structures is the emergence of correlated phases not foreseeable from the single layers alone. In Ta-dichalcogenide heterostructures made of a good metallic 1H- and a Mott-insulating 1T-layer, recent reports have evidenced a cross-breed itinerant and localized nature of the electronic excitations, similar to what is typically found in heavy fermion systems. Here, we put forward a new interpretation based on first-principles calculations which indicates a sizeable charge transfer of electrons (0.4-0.6 e) from 1T to 1H layers at an elevated interlayer distance. We accurately quantify the strength of the interlayer hybridization which allows us to unambiguously determine that the system is much closer to a doped Mott insulator than to a heavy fermion scenario. Ta-based heterolayers provide therefore a new ground for quantum-materials engineering in the regime of heavily doped Mott insulators hybridized with metallic states at a van der Waals distance.
            

Tags: density-functional-theory, dynamical-mean-field-theory, kondo-insulator, strongly-correlated-electron-systems, tmdc-heterostructure
Organization: open.bydata