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opencc-by-4.0Jun 2023View details →

Dataset: Pyroelectric Influence on Lithium Niobate During the Thermal Transition for Cryogenic Integrated Photonics

Dataset of the publication "Pyroelectric Influence on Lithium Niobate During the Thermal Transition for Cryogenic Integrated Photonics", F. Thiele, et al., in the journal Materials for Quantum Technology (2023). Abstract: <blockquote> Lithium niobate has emerged as a promising platform for integrated quantum optics, enabling efficient generation, manipulation, and detection of quantum states of light. However, integrating single-photon detectors requires cryogenic operating temperatures, since the best performing detectors are based on narrow superconducting wires. While previous studies have demonstrated the operation of quantum light sources and electro-optic modulators in LiNbO3 at cryogenic temperatures, the thermal transition between room temperature and cryogenic conditions introduces additional effects that can significantly influence device performance. In this paper, we investigate the generation of pyroelectric charges and their impact on the optical properties of lithium niobate waveguides when changing from room temperature to 25 K, and vice versa. We measure the generated pyroelectric charge flow and correlate this with fast changes in the birefringence acquired through the Sénarmont-method. Both electrical and optical influence of the pyroelectric effect occur predominantly at temperatures above 100 K. </blockquote>

opencc-by-4.0Nov 2023View details →

Negative Differential Resistance, Instability, and Critical Transition in Lightning Leader

There is a challenging issue of die out and restrike of leaders in a burst of lightning event, such as multiplicity of strokes in grounded flash or recoil leader in cloud flash, although the argument involves the effects of channel characteristic of negative differential resistance instability, there is internal consistency about the instability, the bi-stability of insulation and induction and their critical transition from the view of bifurcation theory of nonlinear dynamics. In this paper, we examined the differential resistance characteristics of the leader-streams lighting system, we associate the leader-streamer channel differential resistance characteristics and sign change with channel state and instability transitions. The critical current and potential difference conditions for the stable transition of the leader-streamer channel are investigated. It is found that the necessary current required for the stable development of the channel is increased with the length of the leader channel, while the internal channel electric field of the leader decreases accordingly.

opencc-zeroDec 2000View details →

FIG. 18 in Snakes of the lower/middle Miocene transition at Vieux Collonges (Rhône, France), with comments on the colonisation of western Europe by colubroids

FIG. 18. — Representatives of the families Boidae, Colubridae (Colubrinae + Natricinae), Elapidae and Viperidae reported from the Miocene localities of France, Germany and Czech Republic. Numbers in the table represent the numbers of specimens.

opencc-zeroNov 2023View details →

Data from: Topological transitions of the generalized Pancharatnam-Berry phase

Distinct from the dynamical phase, in a cyclic evolution, a system's state may acquire an additional component, a.k.a. geometric phase. Recently, it has been demonstrated that geometric phases can be induced by a sequence of generalized measurements implemented on a single qubit. Furthermore, it has been predicted that such geometric phases may exhibit a topological transition as a function of the measurement strength. We demonstrate and study this transition experimentally by employing an optical platform where the qubit is represented by the polarisation of light and the weak measurement is performed by means of coupling with the spatial degree of freedom. Our protocol can be interpreted in terms of environment-induced geometric phases, whose values are topologically determined by the environment-system coupling strength. Our results show that the two limits of geometric phase induced by either sequences of either weak or projective measurements are topologically distinct.

opencc-by-4.0Nov 2023View details →

Constitutive behavior of olivine gouge across the brittle-ductile transition

The bottom of the lithosphere is characterized by a thermally controlled transition from brittle to ductile deformation. While the mechanical behavior of rocks firmly within the brittle and ductile regimes is relatively well understood, how the transition operates remains elusive. Here, we study the mechanical properties of pure olivine gouge from 100 to 500ºC under 100 MPa pore-fluid pressure in a triaxial deformation apparatus as a proxy for the mechanical properties of the upper mantle across the brittle-ductile transition. We describe the mechanical data with a rate-, state-, and temperature-dependent constitutive law with multiple thermally activated deformation mechanisms. The stress power exponents decrease from 70±10 in the brittle regime to 17±3 and 4±2 in the semi-brittle and ductile regimes, respectively. The mechanical model consistently explains the mechanical behavior of olivine gouge across the brittle-ductile transition, capturing the gradual evolution from cataclasis to crystal plasticity.

opencc-by-4.0Dec 2023View details →

Transition between distinct hybrid skyrmion textures through their hexagonal-to-square crystal transformation in a polar magnet

The file Manuscript data files.7z contains the experimental data used for creating the figures in the manuscript entitled "Transition between distinct hybrid skyrmion textures through their hexagonal-to-square crystal transformation in a polar magnet" that appear in Nature Communications 14, 8050 (2023).Paper abstract: Magnetic skyrmions, topological vortex-like spin textures, garner significant interest due to their unique properties and potential applications in nanotechnology. While they typically form a hexagonal crystal with distinct internal magnetisation textures known as Bloch- or Néel-type, recent theories suggest the possibility for direct transitions between skyrmion crystals of different lattice structures and internal textures. To date however, experimental evidence for these potentially useful phenomena have remained scarce. Here, we discover the polar tetragonal magnet EuNiGe3 to host two hybrid skyrmion phases, each with distinct internal textures characterised by anisotropic combinations of Bloch- and Néel-type windings.  Variation of the magnetic field drives a direct transition between the two phases, with the modification of the hybrid texture concomitant with a hexagonal-to-square skyrmion crystal transformation. We explain these observations with a theory that includes the key ingredients of momentum-resolved Ruderman–Kittel–Kasuya–Yosida and Dzyaloshinskii-Moriya interactions that compete at the observed low symmetry magnetic skyrmion crystal wavevectors. Our findings underscore the potential of polar magnets with rich interaction schemes as promising for discovering new topological magnetic phases.

opencc-by-4.0Dec 2023View details →

Perturbative effective field theory expansions for cosmological phase transitions, dataset

This dataset is the work of Oliver Gould and Tuomas V.I. Tenkanen. It collects the numerical data from the paper <a href="https://arxiv.org/abs/2309.01672">"Perturbative effective field theory expansions for cosmological phase transitions"</a> (2023). It primarily contains data from perturbative calculations of the thermal evolution of the real-triplet extended Standard Model at two benchmark parameter points.In addition, for comparison to the perturbative results, we have included data of the scalar quadratic condensates as a function of temperature from the lattice Monte-Carlo simulations of Lauri Niemi, Michael J. Ramsey-Musolf, Tuomas V.I. Tenkanen and David J. Weir, from the paper <a href="https://doi.org/10.1103/PhysRevLett.126.171802">"Thermodynamics of a Two-Step Electroweak Phase Transition"</a> (2020). We thank the authors for granting permission to reproduce this data here.Everything is contained within the archive file <a href="https://zenodo.org/api/records/10353066/draft/files/triplet_two_step_data.tar.gz/content">triplet_two_step_data.tar.gz</a>, a tarball compressed with Gzip. For further details and for the context of this dataset, see the above papers. Details of the conventions used in the dataset can be found in the accompanying README.md file.

opencc-by-4.0Dec 2023View details →

Dataset of Transitive with inanimate subjects

The data set is concerned with 現代日本語における無生物主語他動詞文について (Luncheon Linguistics, TUFS, 2023-12-13). You can download all the relevant files that comprise the presentation pdf, the supporting material for the presentation and R script in rmd format.

opencc-zeroJan 2024View details →

Scaling regimes and fluctuations of observables in computer glasses approaching the unjamming transition

This dataset can be used to reproduce the figures in the corresponding manuscript, in preparation for publication in the Journal of Chemical Physics. As described in the manuscript, the (mostly statistical) quantities presented here were computed from ensembles of simulated disordered solids (harmonic sphere packings, diluted spring networks, and packing derived networks). The individual simulations involve the minimization of the system's energy which is computed from positional degrees of freedom (of particles in a packing or nodes in a network). Macroscopic quantities (such as shear modulus or contact number/excess connectivity) are then computed for each sample. The displacement response feilds are computed by solving a linear matrix equation involving the Hessian of 2D packings of harmonic spheres. See the manuscript for more details.

opencc-zeroMar 2024View details →

Short-range correlation of stress chains near solid-to-liquid transition in active monolayers

Using a three-dimensional model of cell monolayers, we study the spatial organization of active stress chains as the monolayer transitions from a solid to a liquid state. The critical exponents that characterize this transition map the isotropic stress percolation onto the two-dimensional random percolation universality class suggesting short-range stress correlations near this transition. This mapping is achieved via two distinct, independent pathways: (i) cell-cell adhesion and (ii) active traction forces. We unify our findings by linking the nature of this transition to high-stress fluctuations, distinctly linked to each pathway. The results elevate the importance of the transmission of mechanical information in dense active matter and provide a new context for understanding the non-equilibrium statistical physics of phase transition in active systems.

opencc-by-4.0Dec 2022View details →

Figure 3 in Diet of the European eel Anguilla anguilla (Linnaeus, 1758) in two transitional waters of Southwestern Mediterranean

Figure 3. – Comparison of the IRI of major items ingested by Anguilla anguilla from Mellah lagoon (in black) and Wadi El Kebir (in gray).

opencc-by-4.0Dec 2022View details →

Figure 1 in Diet of the European eel Anguilla anguilla (Linnaeus, 1758) in two transitional waters of Southwestern Mediterranean

Figure 1. – Geographical location of sampling sites (*) of Anguilla anguilla in Mellah lagoon (ML) and Wadi El Kebir (WEK).

Fig. 9 in Cryptic Speciation And Characteristics Of The Transition Bias Following An Example Of The Cytb Gene In Palearctic Mammals

Fig. 9. Variation of summarized tv/ts-index in micro- (1) and macromammals (2) depending on nucleotide substitution level. Thick lines illustrate exponential approximation.

Fig. 8 in Cryptic Speciation And Characteristics Of The Transition Bias Following An Example Of The Cytb Gene In Palearctic Mammals

Fig. 8. Variation of transition (upper lines) and transversion (lower lines) frequencies accordingly to substitution frequencies level. Think lines are empirical data for each subfamily/family, thick ones — polynomial approximations of averaged data.

Fig. 2 in Cryptic Speciation And Characteristics Of The Transition Bias Following An Example Of The Cytb Gene In Palearctic Mammals

Fig. 2. Average frequencies of nucleotide substitutions frequencies (sub) and its standard errors of the three taxonomical levels in micromammals (black) and macromammals (gray).

T a b l e 1 in Cryptic Speciation And Characteristics Of The Transition Bias Following An Example Of The Cytb Gene In Palearctic Mammals

T a b l e 1. Average (M), sample deviations (SD) of nucleotide substitution, ts/tv and F indexes of different taxonomical levels within 15 Palearctic mammal families/subfamilies

Experimental absorption spectra used in "Spectral profile of ro-vibrational transitions of HCl broadened by He, Ar and SF6: testing the β-correction to the Hartmann-Tran profile and the speed dependent (complex) hard collision model"

Experimental absorption spectra used in the article entitled "Spectral profile of ro-vibrational transitions of HCl broadened by He, Ar and SF6: testing the β-correction to the Hartmann-Tran profile and the speed dependent (complex) hard collision model", to be published in the Journal of Quantitative Spectroscopy and Radiative Transfer. Accepted 19 March 2024. <div> <div> <div> <div> <h3><a title="Persistent link using digital object identifier" href="https://doi.org/10.1016/j.jqsrt.2024.108977" target="_blank" rel="noreferrer noopener">https://doi.org/10.1016/j.jqsrt.2024.108977</a></h3> </div> </div> </div> </div>   Comma separated ASCII files with 1 header line. First column is wavenumber in cm-1 The rest of the columns contain the napierian absorbance at the total pressure given in the header.  Mind the units!: pressure of Ar-mixtures is expressed in Torr, pressure of He- and SF6-mixtures is expressed in mbar

opencc-zeroMar 2024View details →

Plankton and benthic foraminiferal dataset for the study of the Eocene-Oligocene transition

The Eocene–Oligocene transition (EOT) was the crucial turning point when Earth's climate shifted to its current cool state. Understanding how life responded to this "warmhouse-to-icehouse" shift was limited by the absence of high-resolution fossil data. Here, we use a novel AI algorithm to construct a 28-myr-long species richness history of foraminifera with ~26,000-year resolution. A significant richness decline occurred during the EOT, eliminating 74% of species. Planktonic and larger benthic foraminiferal extinctions are associated with rapid cooling, sea-level fall, and positive carbon isotopic excursion. However, small benthic foraminifera in deep oceans experienced a two-phase biocrisis coinciding with changes in food supply and volcanic activity. These findings reveal complicated, ecologically differentiated environment-life processes and the need to reconsider other major bioevents in deep time.

opencc-by-4.0May 2022View details →

Transition of laser-induced terahertz spin currents from torque- to conduction-electron-mediated transport

Data for the publication "Transition of laser-induced terahertz spin currents from torque- to conduction-electron-mediated transport" published in Physical Review B. The following datasets are provided: Conductivities, electro-optic THz signals vs time and corresponding Fourier amplitude spectra for thin and thick YIG, GIG, Maghemite, Magnetite and Fe, spin currents of the mentioned materials vs time and superposition of Fe and Maghemite spin currents and raw data.