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14 results for “lattice dynamics”
Data for: Bound impurities in a one-dimensional Bose lattice gas: low-energy properties and quench-induced dynamics
<p>Dataset for <em>Bound impurities in a one-dimensional Bose lattice gas: </em><em>low-energy properties and quench-induced dynamics</em> [<a href="https://scipost.org/SciPostPhysCore.7.3.049">SciPost Phys. Core 7, 049 (2024)</a>].</p>
Data supporting for: A High-Throughput Framework for Lattice Dynamics
<p><span>We develop an automated high-throughput workflow for calculating lattice dynamical properties </span><span>from first principles including those dictated by anharmonicity. The pipeline automatically calculates </span><span>interatomic force constants (IFC) up to 4th order from perturbed training supercells, and uses the </span><span>IFC to calculate lattice thermal conductivity, coefficient of thermal expansion, and vibrational free </span><span>energy and entropy. It performs phonon renormalization for dynamically unstable compounds to</span><br><span>obtain real effective phonon spectra at finite temperatures and calculates the associated free energy </span><span>corrections.</span> <span>The choice of methods and parameter selection process are done in a manner that </span><span>strikes a balance of computational efficiency and accuracy of results (as assessed through convergence </span><span>testing and comparison to experimental measurements). </span></p> <p><span>The following data includes:</span></p> <ul> <li><span>materials we calculated lattice thermal conductivities (kappa folder)</span></li> <li><span>materials we applied renormalization to get corrected free energies (renormalization folder)</span></li> </ul> <p><span>The target of this dataset is giving users a reference for our inputs and outputs when they want to run our workflow by their own.</span></p>
Sub-picosecond thermalization dynamics in condensation of strongly coupled lattice plasmons
<p>Raw data used in manuscript Figures 1-7 of the publication.</p> <p>The data are in the form of .csv as read from a spectrometer. </p>
Experimental data for "Localization of lattice dynamics in low-angle twisted bilayer graphene"
<p>This repository contains the experimental data related to the article "Localization of lattice dynamics in low-angle twisted bilayer graphene" and is provided to the reader under the “data availability” directive. the files have been organized on a per-figure basis.</p>
Determination of sub-ps lattice dynamics in FeRh thin films
<p>Open Access Data for "Determination of sub-ps lattice dynamics in FeRh thin films" published in Scientific Reports <strong>12</strong>, 8584 (2022)</p> <p>https://doi.org/10.1038/s41598-022-12602-w</p> <p> </p> <p>Raw data from the XFEL experiment are accessible at https://doi.psi.ch/detail/10.16907%2F85ff2f32-f561-4413-a02a-74abc65cc82b</p>
Angle-dependent magnetization dynamics with mirror-symmetric excitations in artificial quasicrystalline nanomagnet lattices
<p>The file ManscuriptDataFiles.7z contains RAW spectroscopy data, origin plot file, micromagnetic simulation MIF files at 100 mT used in the manuscript entitiled "Angle-dependent magnetization dynamics with mirror-symmetric excitations in artificial quasicrystalline nanomagnet lattices" that appeared in Physical Review B, <strong>98</strong>, 174408 (2018).</p> <p>Manuscript Abstract: We report angle-dependent spin-wave spectroscopy on aperiodic quasicrystalline magnetic lattices, i.e., Ammann, Penrose P2 and P3 lattices made of large arrays of interconnected Ni<sub>80</sub>Fe<sub>20</sub> nanobars. Spin-wave spectra obtained in the nearly saturated state contain distinct sets of resonances with characteristic angular dependencies for applied in-plane magnetic fields. Micromagnetic simulations allow us to attribute detected resonances to mode profiles with specific mirror symmetries. Spectra in the reversal regime show systematic emergence and disappearance of spin-wave modes indicating reprogrammable magnonic characteristics.</p>
Discovery of enhanced lattice dynamics in a single-layered hybrid perovskite
<p>This repository presents the raw data for the paper "<strong>Discovery of enhanced lattice dynamics in a single-layered hybrid perovskite</strong>", published as an open-access article in <em>Science Advances</em> at <a href="https://www.science.org/doi/10.1126/sciadv.adg4417">https://www.science.org/doi/10.1126/sciadv.adg4417</a>.</p> <p>Data presented in the Supplementary Materials will be provided upon request. For such requests or general questions regarding the paper, please contact Zhuquan Zhang (<a href="mailto:zhuquan@mit.edu">zhuquan@mit.edu</a>), Keith Nelson (<a href="mailto:kanelson@mit.edu">kanelson@mit.edu</a>), or Edoardo Baldini (<a href="mailto:edoardo.baldini@austin.utexas.edu">edoardo.baldini@austin.utexas.edu</a>).</p>
Phonon calculations for "Uncovering design principles for amorphous-like heat conduction using two-channel lattice dynamics"
<p>These are the phonon calculations for</p> <p>R. Hanus, <strong>J. George</strong>, M. Wood, <strong>A. Bonkowski</strong>, Y. Cheng, D. L. Abernathy, M. E. Manley, G. Hautier, G. J. Snyder, R. P. Hermann, “Uncovering design principles for amorphous-like heat conduction using two-channel lattice dynamics”, <em>Materials Today Physics</em>, <strong>2021</strong>, In Press, <a href="https://doi.org/10.1016/j.mtphys.2021.100344">https://doi.org/10.1016/j.mtphys.2021.100344</a></p>
Phonon Properties and Lattice Dynamics of Two- and Tri-Layered Lead Iodide Perovskites Comprising Butylammonium and Methylammonium Cations—Temperature-Dependent Raman Studies
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Floquet dynamics of ultracold atoms in optical lattices with a parametrically modulated trapping potential
<p>This dataset includes the data on which the figures of the preprint "Floquet dynamics of ultracold atoms in optical lattices with a parametrically modulated trapping potential" by Usman Ali, Martin Holthaus, Torsten Meier ( https://arxiv.org/abs/2405.02125v1 ) are based and the relevant codes that were used to generate the data.</p> <p>U.A. gratefully acknowledges support from Deutscher Akademischer Austauschdienst (DAAD, German Academic Exchange Service) through a doctoral research grant and we thank the PC2 (Paderborn Center for Parallel Computing) for providing computing time. M.H. has been supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through Project No. 397122187.</p>
Movies for "Lissajous dynamics of a quantum particle in a tilted two-dimensional discrete lattice"
<p>This upload includes movies corresponding to Figures 4 and 5 of the paper "Lissajous dynamics of a quantum particle in a tilted two-dimensional discrete lattice", <a href="https://arxiv.org/abs/2409.02268" target="_blank" rel="noopener">arXiv:2409.02268</a>. </p>
Pendellösung Interferometry Probes the Neutron Charge Radius, Lattice Dynamics, and Fifth Forces
<p>Data from manuscript entitled: "Pendellosung Interferometry Probes the Neutron Charge Radius, Lattice Dynamics, and Fifth Forces" arXiv:2103.05428</p> <p> </p>
Variational manifolds for ground states and scarred dynamics of blockade-constrained spin models on two and three dimensional lattices
<p>Abstract: We introduce a variational manifold of simple tensor network states for the study of a family of constrained models that describe spin-<span><span><span><span><span><span><span><span>1/</span></span></span><span><span><span>2</span></span></span></span></span></span></span></span> systems as realized by Rydberg atom arrays. Our manifold permits analytical calculation via perturbative expansion of one- and two-point functions in arbitrary spatial dimensions and allows for efficient computation of the matrix elements required for variational energy minimization and variational time evolution in up to three dimensions. We apply this framework to the PXP model on the hypercubic lattice in one, two, and three dimensions and show that, in each case, it exhibits quantum phase transitions breaking the sublattice symmetry in equilibrium, and hosts quantum many-body scars out of equilibrium. We demonstrate that our variational ansatz qualitatively captures all these phenomena and predicts key quantities with an accuracy that increases with the dimensionality of the lattice, and conclude that our method can be interpreted as a generalization of mean-field theory to constrained spin models.</p> <p>Access will be granted upon reasonable request.</p>
Design and Computational Fluid Dynamics (CFD) modelling of Biomimetic Voronoi lattice Scaffolds
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