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11 results for “charge density wave”
Dynamics of Collective Modes in an unconventional Charge Density Wave system BaNi2As2 - Raw Data
<p>This repository includes two datasets included in the study "Dynamics of Collective Modes in an unconventional<br> Charge Density Wave system BaNi2As2". Two datasets are included:</p> <p>Temperature_dependent_reflectivity_changes.dat</p> <p>Fluence_dependent_reflectivity_changes_at 10K.dat</p> <p>Temperature_dependent_reflectivity_changes.dat contain photoinduced reflectivity transients, recorder on BaNi2As2 for sample temperatures between 13 K and 149K. The first column is time-delay, other columns are the corresponding photoinduced reflectivity traces recorded at respective temperatures (constant fluence of 0.4 mJ cm<sup>−2</sup>).</p> <p> </p> <p>Fluence_dependent_reflectivity_changes_at 10K.dat contain photoinduced reflectivity transients, recorder on BaNi2As2 at 10 K. The first column is time-delay, other columns are the corresponding photoinduced reflectivity traces recorded at respective fluences. Each signal has been normalized to the respective fluence.</p> <p> </p>
Dataset package for the Manuscript "Absence of bulk charge density wave order in the normal state of UTe2"
<p>The attached dataset contains raw data, normalized to the respective attenuater, reported in the manusript: </p> <p>"Absence of bulk charge density wave order in the normal state of UTe2".</p> <p>The files "Figure4a.dat", "Figure4b.dat", and "Figure4c.dat" contain data that were presented in Figure 4a, Figure4b, and Figure4c of the manuscript. The first columns contain the x-axis values, the second columns the intensities, and the third column the errorbars.</p> <p>The files "Figure3_N.dat" present the data in Figure 3 c. Here, N labels the (K,L)-coordinates. These are orivuded in "Figure3_KL.dat", where for a number N the N-th row presents the K and L values in the first and second column, respectively.</p> <p>The files "Fig2a.dat" and "Fig2b.dat" contain the datapoints presented in Figure 2a and Figure 2b, where the first column corresponds to the x-axis coordinate and the second column to the recorded intensity.</p>
Control of Charge-Spin Interconversion in van der Waals Heterostructures with Chiral Charge Density Waves
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Dataset for "Enhanced charge density wave coherence in a light-quenched high temperature superconductor"
<p>Dataset for "Enhanced charge density wave coherence in a light-quenched high temperature superconductor"</p>
Inhomogeneous high temperature melting and decoupling of charge density waves in spin-triplet superconductor UTe2
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Dynamical decoding of the competition between charge density waves in a kagome superconductor
<p>P1, P2, P3 denote the peaks at (0 -1.5 2.5), (-0.5 -1 2), (0 -1.5, 3), respectively.</p>
Data Files for P. Mai et al., "Fluctuating charge-density-wave correlations in the three-band Hubbard model" (2024)
<p>These are the data for P. Mai et al., "Fluctuating charge-density-wave correlations in the three-band Hubbard model" (2024)</p> <p>arXiv reference: https://arxiv.org/abs/2405.13164</p> <p>This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award Number DE-SC0022311. This research used resources of the Oak Ridge Leadership Computing Facility, a DOE Office of Science User Facility supported under Contract No. DE-AC05-00OR22725.</p>
Dataset for: "Spectrally Resolving the Phase and Amplitude of Coherent Phonons in the Charge Density Wave State of 1T-TaSe2"
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Data files for Peizhi Mai et al., "Robust charge-density wave correlations in the electron-doped single-band Hubbard model" (2023)
<p>Data files for "Robust charge-density wave correlations in the electron-doped single-band Hubbard model" by P. Mai, N. S. Nichols, S. Karakuzu, F. Bao, A Del Maestro, T. A. Maier, and Steven Johnston</p> <p>Preprint: https://arxiv.org/abs/2210.14930</p>
Unconventional charge-density-wave gap in monolayer NbS2
<p>This repository contains the data and source code associated with the paper: *Unconventional charge-density-wave gap in monolayer NbS₂*.</p><p>Experimental setup</p><p>STM and STS were carried out at a base operating temperature of T₀ = 0.4 K after in-situ transfer from the preparation chamber. STS was performed with the lock-in technique. STM images were taken in constant current mode.</p><p>Computational setup</p><p>All DFT and DFPT calculations were performed using Quantum ESPRESSO 7.1.</p><p>Further information in the README file.</p>
X-ray Diffraction Data Investigating Charge Density Waves in CsV3Sb5
<h1>## Description of DFXM data on CsV3Sb5 collected at 6 ID-C of the Advanced Photon Source of Argonne National Lab ##</h1> <h2>Overview</h2> <p>This repository contains darkfield X-ray microscopy images of CsV3Sb5 collected at the (1/2 1/2 1/4), (1/2 1/2 1/2), (1 1 2), and (2 2 0) Bragg peaks. The experiment was conducted at Sector 6-ID-C of the Advanced Photon Source (APS) at Argonne National Laboratory in March of 2023. <br>Corresponding APS beamline scientist: Zahir Islam</p> <h1># Data Structure</h1> <p>The data is labeled with a prefix to establish the author, experiment type, and experiment date:</p> <p> JPlumb-DFXM-Mar2023</p> <p>Within each experimental folder, there are several subdirectories that contain relevant experimental files:</p> <p> "data" Folder:<br> Contains subfolders labeled by scan numbers in the format S### (e.g., S001, S002).<br> Raw data is collected and stored as 16-bit grayscale TIFF images.<br> Each scan represents either a single rocking curve imaging (RCI) scan, with a stack of images that were taken at various theta positions for a given sample location and two theta Bragg angle, or a time series scan that contains a stack of images taken over time, at a static theta position, and with variying sample temperature. <br> See Scan Group description below to learn which type of scan each folder represents.</p> <p> "logs" Folder:<br> Contains experimental logbooks.</p> <p> "structureFiles" Folder:<br> Contains .cif files with lattice parameters of different material structures (alpha and beta phases of NaMnO2).</p> <p> "referenceImages" Folder:<br> Includes optical microscope images of the sample in the as-measured state for reference.</p> <p> "motors" Folder:<br> Contains CSV files corresponding to each scan folder. These files include motor positions (theta, two-theta, XYZ) and other relevant experimental parameters.</p> <p> "scripts" Folder:<br> Contains basic analysis scripts for different scan groupings. Scans are grouped based on similarities and the intent behind their measurements.</p> <p> "cryostatData" Folder:<br> Contains data from the cryostat, recording sample temperature at various times throughout the experiment.</p> <p> "results" Folder:<br> Contains pre-processed maximum intensity projection images for each scan, providing a quick overview of the collected data.</p> <p>December 2023 Experiment<br>Scan Groups</p> <p>Scan Group A:<br> hkl - (0.5, 0.5, 0.25)<br> # of Scans - 1<br> Scan #s - 1<br> Temperature - 3.2 K<br> Exposure Time - 10 seconds<br> X-ray Energy - 20 keV<br> Total Magnification - 26x<br> Effective Pixel Size - 2.115 um/pixel<br> Description - Single scan used for quick code testing.</p> <p>Scan Group B:<br> hkl - (0.5, 0.5, 0.25)<br> # of Scans - 121<br> Scan #s - 1 to 121<br> Temperature - 3.2 K<br> Exposure Time - 10 seconds<br> X-ray Energy - 20 keV<br> Total Magnification - 26x<br> Effective Pixel Size - 2.115 um/pixel<br> Description - 0.25L peak RCI scans collected over an array of sample locations </p> <p>Scan Group C:<br> hkl - (0.5, 0.5, 0.5)<br> # of Scans - 121<br> Scan #s - 122 to 242<br> Temperature - 3.2 K<br> Exposure Time - 10 seconds<br> X-ray Energy - 20 keV<br> Total Magnification - 26x<br> Effective Pixel Size - 2.115 um/pixel<br> Description - 0.5L peak RCI scans collected over an array of sample locations</p> <p>Scan Group D:<br> hkl - (1, 1, 2)<br> # of Scans - 1<br> Scan #s - 243<br> Temperature - 3.2 K<br> Exposure Time - 25 seconds<br> X-ray Energy - 20 keV<br> Total Magnification - 130x<br> Effective Pixel Size - 0.050 um/pixel<br> Description - High-resolution, fine RCI of structural peak</p> <p>Scan Group E:<br> hkl - (2, 2, 0)<br> # of Scans - 1<br> Scan #s - 244<br> Temperature - 3.2 K<br> Exposure Time - 5 seconds<br> X-ray Energy - 22 keV<br> Total Magnification - 130x<br> Effective Pixel Size - 0.050 um/pixel<br> Description - High-resolution, fine RCI of structural peak</p> <p>Scan Group F:<br> hkl - (2, 2, 0)<br> # of Scans - 3<br> Scan #s - 245 to 247<br> Temperature - 3.2 K<br> Exposure Time - 5 seconds<br> X-ray Energy - 22 keV<br> Total Magnification - 130x<br> Effective Pixel Size - 0.050 um/pixel<br> Description - Coarse RCI of structural peak taken at 3 x positions at 3.2 K</p> <p>Scan Group G:<br> hkl - (2, 2, 0)<br> # of Scans - 3<br> Scan #s - 248 to 250<br> Temperature - 87 K<br> Exposure Time - 5 seconds<br> X-ray Energy - 22 keV<br> Total Magnification - 130x<br> Effective Pixel Size - 0.050 um/pixel<br> Description - Coarse RCI of structural peak taken at 3 x positions at 87 K</p> <p>Scan Group H:<br> hkl - (2, 2, 0)<br> # of Scans - 3<br> Scan #s - 251 to 253<br> Temperature - 120 K<br> Exposure Time - 5 seconds<br> X-ray Energy - 22 keV<br> Total Magnification - 130x<br> Effective Pixel Size - 0.050 um/pixel<br> Description - Coarse RCI of structural peak taken at 3 x positions at 120 K</p> <p>Scan Group I:<br> hkl - (2, 2, 0)<br> # of Scans - 6<br> Scan #s - 254 to 259<br> Temperature - 93 K, 94 K, 94.1 K, 94.2 K, 94.3 K, 94.4 K<br> Exposure Time - 5 seconds<br> X-ray Energy - 22 keV<br> Total Magnification - 130x<br> Effective Pixel Size - 0.050 um/pixel<br> Description - Coarse RCI taken at various temperatures through the transition (warming)</p> <p>Scan Group J:<br> hkl - (2, 2, 0)<br> # of Scans - 1<br> Scan #s - <br> Temperature - <br> Exposure Time - 5 seconds<br> X-ray Energy - 22 keV<br> Total Magnification - 130x<br> Effective Pixel Size - 0.050 um/pixel<br> Description - Static theta images taken continuously during warming from 89.4 K and up</p> <p>Scan Group K:<br> hkl - (2, 2, 0)<br> # of Scans - 1<br> Scan #s - <br> Temperature - <br> Exposure Time - 5 seconds<br> X-ray Energy - 22 keV<br> Total Magnification - 130x<br> Effective Pixel Size - 0.050 um/pixel<br> Description - Static theta images taken continuously during warming from 96 K and up</p> <p>Scan Group L:<br> hkl - (2, 2, 0)<br> # of Scans - 1<br> Scan #s - <br> Temperature - <br> Exposure Time - 5 seconds<br> X-ray Energy - 22 keV<br> Total Magnification - 130x<br> Effective Pixel Size - 0.050 um/pixel<br> Description - Static theta images taken continuously during warming from 126 K and up</p> <h2># Data Processing and Analysis</h2> <p>Standard DFXM data processing involves fitting a Gaussian curve to the theta-dependent intensity curve of each pixel in a rocking curve imaging scan. Plotting various gaussian fit parameters for each pixel creates parameter maps that highlight different sources of contrast.</p> <p>Basic analysis scripts (ex. MR23_SGA_basicAnalysis.py) are included for all scan groups in this repository. All analysis is done in Python 3, using various free packages and self-defined scripts are stored in a sub folder named DiffractionMaster. The code is updated as of June 2024.</p> <h2># Contact Information</h2> <p>For any questions or further information, please contact:</p> <p> Jayden C. Plumb: jaydencplumb@gmail.com</p> <p>This dataset and associated documentation are part of research conducted at the Advanced Photon Source, Argonne National Laboratory and funded through the National Science Foundation and Department of Energy and under the supervision of host institution UC Santa Barbara. Please cite appropriately if used in your work.</p> <p> </p> <h1>## Description of HDRM data on CsV3Sb5 collected at ID4B QM2 of the Cornell High Energy Synchrotron Source ##</h1> <h2>Overview</h2> <p>This repository also contains high dynamic range mapping analysis data of CsV3Sb5 collected in the 35 K to 300 K range at different cooling rates. The experiment was conducted at the QM2 beamline of the Cornell High Energy Synchrotron Source (CHESS) in February of 2023. Corresponding CHESS beamline scientist: Suchi Sarker.<br>X-TEC machine learning algorithm was perform by Krishnanand Mallayya. Magnetic characterization accompaning the diffraction data on three samples of the batch was performed by Andrea Capa Salinas at the Materials Research Lab's Low Temperature facilities at UC Santa Barbara.<br><br></p> <h1># Data structure and analysis</h1> <p>"HDRM_Repository_Data" folder contains both: X-TEC analysis of HDRM data, and magnetization data.</p> <p>.txt files have the naming:</p> <p>"CrystalX_Fast/Slow_cool_CDW" and correspond to X-TEC analysis data with straightforward naming. Each can have up to four columns. Column objects are:</p> <p>T (K): Temperature<br>2x2x2: Cluster average intensity for a half-type peaks whose average intensity tracks a similar temperature-dependent trajectory<br>2x2x2+2x2x4: Cluster average intensity for a half-type peaks mixed with quarter-type peaks whose average intensity tracks a similar temperature-dependent trajectory.</p> <p>.dat files have the naming:</p> <p>"GP-CVS-1-X-mass(mg)_FC/ZFC-field(Oe)" and have the standard Quantum Design MPMS3 data file format. We extract "Temperature (K)", "Magnetic Field (Oe)" and "Moment (emu)" to calculate magnetic susceptibility and volumetric susceptibility of three samples in the batch used for HDRM and DFXM experiments.</p>
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