WueData (Univ Würzburg)
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Bodenhydrologische Monitoringdaten charakteristischer Böden in Unterfranken 2018 bis 2024
No full textDas Dataset enthält Bodenfeuchtedaten und Bodentemperaturen von sechs Standorten Unterfrankens für den Zeitraum von 2018 bis 2024, die für ihre jeweiligen Naturräume und hinsichtlich ihrer anthropogenen Nutzung charakteristisch sind. An vier Standorten wurden zusätzlich auch meteorologische Parameter erfasst. Die Daten liegen in Zeitschritten von 15 Minuten vor. Die Bodenfeuchte wurde als volumetrischer Wassergehalt (volumetric water content, VWC %) in zwei bis drei Bodenprofilen pro Standort in unterschiedlichen Tiefen gemessen. Als Bodenfeuchte- und Bodentemperatursensoren wurden Meter 10HS und Meter 5TM Sensoren eingesetzt. Die meteorologischen Parameter wurden mit Pessl iMetos 2 und iMetos 3.3 Stationen erfasst.
Die Messstationen befinden sich in einem Rigosol auf Buntsandstein in einem Weinberg bei Bürgstadt (Odenwald) sowie auf einer Parabraunerde im Lössgebiet bei Herchsheim (Ochsenfurter Gau) unter Ackernutzung. Am Übergang von Muschelkalk in Keuper befinden sich die Stationen in Obbach (Wern-Lauer-Platte), wo eine Braunerde unter Ackernutzung vorliegt und im Forst des Universitätswalds Sailershausen (Hesselbacher Waldland) werden die Untersuchungen in einer Braunerde-Terra fusca durchgeführt. Im Forst befinden sich auch die Stationen in Oberrimbach (Steigerwald) mit Braunerden aus Sandsteinkeuper und in Willmars (Rhön) mit Braunerden aus Buntsandstein. In den Messzeitraum fiel die dreijährige Dürre von 2018 bis 2020, das Jahr 2021 mit einem durchschnittlichen Witterungsverlauf und das Dürrejahr 2022.
Das Langzeitmonitoring wurde im Rahmen der zur Dissertation „Auswirkungen des Klimawandels auf charakteristische Böden in Unterfranken unter Berücksichtigung bodenhydrologischer Monitoringdaten (2018 bis 2022)“ von Julian Krause durchgeführt. Begleitend wurden umfangreichen Gelände- und Laboranalysen der grundlegenden bodenkundlichen Parameter der Bodenprofile und der Standorte durchgeführt.
Das Dataset wurde im Rahmen des EU-EFRE-Projekts „BigData@Geo“ und des BMBF-Projekts „REKLINEU“ generiert.The dataset contains data on soil moisture and soil temperature of six locations in Lower Franconia that are characteristic of their respective natural areas and their anthropogenic use for the time period of 2018 to 2024. In addition meteorological parameters were recorded at four locations. The data is available in time steps of 15 minutes. Soil moisture was measured as volumetric water content (VWC %) in two to three soil profiles per site at different depths. Meter 10 HS and meter 5TM sensors were used as soil moisture and soil temperature sensors. The meteorological parameters were recorded using Pessl iMetos 2 and iMetos 3.3 stations.
The measuring stations are located in Regic Anthrosols on red sandstone in a vineyard near Bürgstadt (Odenwald) and on Luvisols in the loess area near Herchsheim (Ochsenfurter Gau) under arable land use. At the transition from Muschelkalk to Keuper, the stations are located in Obbach (Wern-Lauer-Platte), where Cambisols under arable use are present, and in the forest of the Sailershausen university forest (Hesselbacher Waldland), the investigations are carried out in Calcic Luvisols. In the forest there are also the stations in Oberrimbach (Steigerwald) with Cambisols from sandstone-Keuper and in Willmars (Rhön) with Cambisols from red sandstone. The observation period included the three-year drought from 2018 to 2020, the year 2021 with an average weather pattern and the drought year 2022.
The long-term monitoring was carried out as part of the dissertation “Impact of climate change on characteristic soils in Lower Franconia with consideration of soil hydrological monitoring data (2018 to 2022)” by Julian Krause. This was accompanied by extensive field and laboratory analyses of the basic pedological parameters of the soil profiles and the sites.
The dataset was generated in the frame of the EU ERDF project “BigData@Geo” and the FMER project “REKLINEU”
Coexistence of topological and normal insulating phases in electro-optically tuned InAs/GaSb bilayer quantum wells
No full text(Abstract) Data to reproduce the figures of the publication: M. Meyer, T. Fähndrich, S. Schmid, A. Wolf, S. S. Krishtopenko, B. Jouault, G. Bastard, F. Teppe, F. Hartmann , and S. Höfling, Coexistence of topological and normal insulating phases in electro-optically tuned InAs/GaSb bilayer quantum wells, Phys. Rev. B 109, L121303 (2024), DOI: 10.1103/PhysRevB.109.L121303. This study demonstrates the coexistence of both normal and topological insulating phases in InAs/GaSb bilayer quantum well induced by the built-in electric field tuned optically and electrically. The findings pave the way for utilizing a different electro-optical tuning scheme to manipulate InAs/GaSb bilayer quantum wells to obtain trivial-topological insulating interfaces in the bulk rather than at the physical edge of the device. Please read the 'README' file.M.M., F.H., S.K., and S.H. acknowledge financial support by the German Research Foundation (DFG) under Germany's Excellence Strategy–EXC2147 “ct.qmat” (project id 390858490). S.S., F.H. and S.H. acknowledge financial support Elite Network of Bavaria within the graduate program “Topological Insulators”. S.K., B.J and F.T acknowledge financial support by the Occitanie region through the 406 program “Quantum Technologies Key Challenge” (TARFEP 407 project) and French Agence Nationale pour la Recherche (ANR) with Equipex+ Hybat (Grant No. ANR-21-ESRE-0026) project
Dataset for Donor-Acceptor Dyads with Chalcogen Phenyl Ethers
No full textThis datasets contains the raw fs-TA datasets obtained by measurements using a Helios pump-probe spectrometer (Ultrafast Systems), the transient data obtained by ns-TA spectroscopy using an inhouse build ns-TA spectrometer based on a LP920 setup (Edinburgh Instruments) with an extension that allows for magnetic field dependent measurements up to B = 10 T. The LP920 data was deconvoluted using the L900 software (Edinburgh Instruments).
Also, the python optimization program is provided for the fitting and simulation of the magnetic field dependent data using the free software MolSpin
Capturing the sol and gel states of thermoresponsive poly(2-oxazoline)/-(2-oxazine) hydrogels by ambient and subambient solid-state NMR
No full textThe publication (published in the Journal of Materials Chemistry B) deals with the detailed characterization of three different poly-(2-oxazolin) based hydrogels. In this data package, raw data from rheology, DSC and different NMR measurements including in solution, in the solid-state and in the frozen state is available
Artificially built Kondo chains with organic radicals on metallic surfaces: new model system of heavy fermion quantum criticality
No full textHeavy fermion quantum criticality is an extremely rich domain of research which represents a framework to understand strange metals as a consequence of a Kondo breakdown transition. Here we provide an experimental realization of such systems in terms of organic radicals on a metallic surface. The ground state of organic radicals is a Kramer’s doublet that can be modeled by a spin ½ degree of freedom. Using on-surface synthesis and scanning tunneling microscopy (STM) tip manipulation, one can controllably engineer and characterize chains of organic radicals on a Au(111) surface. The spatial-resolved differential conductance reveals site-dependent low-energy excitations, which support the picture of emergent many-body Kondo physics. Using quantum Monte Carlo simulations, we show that a Kondo lattice model of spin chains on a metallic surface reproduces accurately the experimental results. This allows us to interpret the experimental results in terms of a heavy fermion metal, below the coherence temperature. We foresee that the tunability of these systems will pave the way to realize quantum simulators of heavy fermion criticality.Please read the 'Readme.md' file.The authors gratefully acknowledge the scientific support and HPC resources provided by the Erlangen National High Performance Computing Center (NHR@FAU) of the Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) under NHR project 80069 provided by federal and Bavarian state authorities. NHR@FAU hardware is partially funded by the German Research Foundation (DFG) through grant 440719683. They also gratefully acknowledge the Gauss Centre for Supercomputing e.V. (www.gauss- centre.eu) for funding this project by providing computing time through the John von Neumann Institute for Computing (NIC) on the GCS Supercomputer JUWELS46 at Jülich Supercomputing Centre (JSC). A.F.F acknowledges financial support from the German Research Foundation (DFG) under the grant AS 120/16-1 (Project number 493886309) that is part of the collaborative research project SFB Q-M&S funded by the Austrian Science Fund (FWF) F 86. BD acknowledges financial support from the German Research Foundation (DFG) under the grant DA 2805/2 (Project number 528834426). This research has been also funded by Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat (EXC 2147, Project No. 390858490)
DFT and TD-DFT calculations of fluorene bridged Triarylamine Dimers and Triarylamine-bridge- / Triarylamine-fragments
No full textThis dataset contains (TD)-DFT calculations (Gaussian 09 output files) for a series of 2,7 fluorene bridged triarylamine dimers in their mono-cationic inter valence charge transfer state as well as (TD)-DFT calculations (Gaussian 09 output files) for fragments of the respective compounds consisting of one triarylamine subunit connected to the bridge.
The dataset is used in a print publication from the Lambert group with the title "Switching from transition state theory to solvent controlled diabatic electron transfer regime in bis-triarylamine mixed valence radical cations by modification of the bridge electron density".
For a detailed content list, please refer to the "readme" file
The influence of land distribution and areal extent on Mesoarchaean climate - global tas temperatures
No full textClimate change in the Mesoarchaean potentially played a pivotal role in facilitating gold mobilisation and deposition, ultimately contributing to the formation of the Witwatersrand gold province in the Kaapvaal Craton (South Africa) – the world’s largest known gold province. Almost all of the gold there occurs in the 2.90 – 2.79 Ga Central Rand Group, whereas the underlying 2.95 - 2.91 Ga West Rand Group, despite similar sedimentology, is essentially barren. This has been explained by differing degrees of chemical weathering, with intense weathering in Central Rand Group times having facilitated gold leaching from the Archaean hinterland. However, the drivers of this climatic change remain unsolved. To investigate this, we performed 140 simulations using the Planet Simulator, an Earth system model of intermediate complexity. We systematically assessed the effects of varying land distributions (diagonal, central, polar), land surface fractions (8–28 %), atmospheric CO₂-equivalent concentrations (3–30 %), and surface albedo (0.15–0.30). In addition to the expected strong dependence of global mean temperature on atmospheric greenhouse gas concentration, our results show reduced seasonality at higher atm. CO₂-equivalents. Increasing land area generally leads to cooling, except at low CO2-equivalent concentrations (3-5 %) and low albedo (<0.2). When land exceeds ~13 % of total Earth’s surface, it starts to have a pronounced effect on global climate. Among the spatial configurations, diagonal land distribution shows the highest climate sensitivity. The climatic shift around 2.9 Ga may be linked to emergence of extensive low-albedo (<0.2) surfaces (e.g., mafic/ultramafic rocks) and/or to the latitudinal drift of the Kaapvaal Craton into a more radiatively sensitive zone.
This dataset contains global 2-meter above the ground temperature (tas) at a horizontal resolution of T21 (64 x 32 grid points). The data shows the effects of global land distribution on Mesoarchaean climate.
Effects of Global Land Distribution:
This experiment investigated the influence of Mesoarchaean land distribution and pattern on global climate, focusing on the global mean near-surface air temperature (tas). Three idealised continental configurations were implemented, representing diagonal, central and polar land distribution. For each configuration the total land fraction relative to the planetary surface area was systematically varied in four steps: 8%, 13%, 20% and 28%.
All simulations were performed using the Planet Simulator (PlaSim; Freadrich et al. 2005), an intermediate-complexity general circulation model. Postprocessing was conducted using PlaSim’s integrated postprocessor. The resulting data are provided in NetCDF format, representing 50-year simulations with the variable tas defined on the dimensions [long(64), lat(32), time (18263)]
Phase diagram of the SU(N) antiferromagnet of spin S on a square lattice
No full textData to reproduce the results of the publication: Jonas Schwab, Francesco Parisen Toldin, and Fakher F. Assaad. "Phase diagram of the SU() antiferromagnet of spin on a square lattice" Phys. Rev. B, 108:115151, Sep 2023. arXiv:2304.07329, doi:10.1103/PhysRevB.108.115151.Paper abstract: We investigate the ground state phase diagram of an SU(N)-symmetric antiferromagnetic spin model on a square lattice where each site hosts an irreducible representation of SU(N) described by a square Young tableau of rows and columns. We show that negative sign free fermion Monte Carlo simulations can be carried out for this class of quantum magnets at any and even values of . In the large- limit, the saddle point approximation favors a four-fold degenerate valence bond solid phase. In the large -limit, the semi-classical approximation points to Néel state. On a line set by in the versus phase diagram, we observe a variety of phases proximate to the Néel state. At and we observe the aforementioned four fold degenerate valence bond solid state. At a two fold degenerate spin nematic state in which the C lattice symmetry is broken down to C emerges. Finally at we observe a unique ground state that pertains to a two-dimensional version of the Affleck-Kennedy-Lieb-Tasaki state. For our specific realization, this symmetry protected topological state is characterized by an SU(18), boundary state, that has a dimerized ground state. These phases that are proximate to the Néel state are consistent with the notion of monopole condensation of the antiferromagnetic order parameter. In particular one expects spin disordered states with degeneracy set by mod(4,2S).Please read the 'README' file.This research has been funded by the Deutsche Forschungsgemeinschaft (DFG) through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter ct.qmat (EXC 2147, Project No. 390858490), the SFB1170 on Topological and Correlated Electronics at Surfaces and Interfaces (Project No. 258499086), Project No. 414456783 and Grant No. AS 120/14-1. 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 Leibniz Supercomputing Centre. The authors gratefully acknowledge the scientific support and HPC resources provided by the Erlangen National High Performance Computing Center (NHR@FAU) of the Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) under the NHR project b133ae. NHR funding is provided by federal and Bavarian state authorities. NHR@FAU hardware is partially funded by the German Research Foundation (DFG) – 440719683
Bandwidth-controlled quantum phase transition between an easy-plane quantum spin Hall state and an -wave superconductor
No full textData 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 -wave superconductor" Phys. Rev. B, 107:155107 , April 2023. arXiv:2207.04803, DOI: 10.1103/PhysRevB.107.155107.Please read the 'README.txt' file.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
Dry Days in Rainy Season (ddrs)
No full textcdo -yearsum -ltc,1 RRmask.nc out.ncNumber of dry days in rainy season: Let RRt be the daily precipitation amount on day t. For ddrs count all days in one year where RRt < 1mm, but only in rainy season which means rs1_ons≤t≤rs1_ces or rs2_ons≤t≤rs2_ces, for climatological rs1_ons, rs1_ces, rs2_ons, rs2_ces