Recycling news: 2026

Research & science SlaKoNet-VQD: A universal Slater-Koster tight-binding Hamiltonian for variational quantum band-structure calculations on near-term hardware arXiv:2607.09761v1 Announce Type: new Abstract: Variational quantum algorithms such as VQE and VQD are promising for near-term electronic structure calculations, but for periodic solids their reach is limited by the cost of building a faithful second-quantized Hamiltonian, typically via DFT plus Wannierization or hand-fit tight-binding parameters. SlaKoNet addresses this by combining deep learn… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Approximate explicit formulas for Stoner-Wohlfarth hysteresis loops arXiv:2607.09881v1 Announce Type: new Abstract: Approximate explicit formulas for the hysteresis loops in the Stoner-Wohlfarth model are derived. We consider the hysteresis loops both for a single particle with a fixed easy-axis direction and for an ensemble of particles with randomly oriented anisotropy axes. The physical assumption used to derive the formulas is that the particle magnetic mom… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Bragg Interferometry of Moir\'e Superlattices: From Geometric Phase Principles to Atomic Reconstruction arXiv:2607.09901v1 Announce Type: new Abstract: The emergence of moir\'e superlattices formed by twisting and stacking two-dimensional materials has created a need for characterization techniques capable of mapping sub-angstrom atomic reconstruction across micron-scale fields of view. This review surveys a suite of methodologies developed to extract geometric phases in electron microscopy and X… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science The Precursor Genome: A Pairwise Reaction Dataset for Solid-State Synthesis arXiv:2607.09903v1 Announce Type: new Abstract: Solid-state reactions remain the dominant route to inorganic materials, yet no large, machine-readable dataset reports their experimental protocols and outcomes with consistent provenance; this gap obstructs first-principles, data-driven, and machine-learning approaches to synthesis science. Here, we present the Precursor Genome, a dataset of 1,03… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Auditing Machine-Learning Models and Their Training Data with Explainability and First-Principles Verification: Application to Spin Hall Conductivity arXiv:2607.09910v1 Announce Type: new Abstract: Machine-learning models for materials properties rest on two assumptions that standard validation never tests: that a model's features reflect the physics of the property rather than accidents of the training distribution, and that the training labels are themselves correct. We introduce a model-agnostic audit protocol for both, combining SHAP att… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Improved Heat Dissipation in CsPbBr${_3}$-hBN Heterostructures arXiv:2607.09914v1 Announce Type: new Abstract: Metal halide perovskite semiconductors are promising materials for optoelectronic and photonic devices, including solar cells and next-generation coherent light sources. However, their low thermal conductivity limits the practical operation of devices under high excitation levels. Integrating thermally conductive, large band-gap two-dimensional (2… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Thermodynamics of hydride formation: Anisotropic size-dependent coupled chemo-thermo-mechanical effects at Ni/NiH interfaces arXiv:2607.09977v1 Announce Type: new Abstract: Ni nanoparticles are frequently used as catalysts for hydrogenation reactions as well as in hydrogen storage applications. Recently, we have shown that small Ni nanoparticles can absorb hydrogen at < 10 bar pressure to form Ni hydride. During this process, the hydride growth is anisotropic, and a coherent Ni/NiH interface is formed. In order to ex… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Anisotropic representations for E(3)-equivariant machine learning coarse-grained potentials arXiv:2607.10002v1 Announce Type: new Abstract: Coarse-graining (CG) lowers the computational cost of atomistic simulations by representing groups of atoms as effective interaction sites, reducing the degrees of freedom of the system but often compromising structural fidelity or requiring system-specific parameterization. Here, we introduce a novel anisotropic machine learning CG potential that… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Probing the Nature of Interstitial Anionic Electrons in 2D Electride Ca$_2$N via Landau-Level Spectroscopy arXiv:2607.10024v1 Announce Type: new Abstract: We investigate the magnetic-field response of interstitial anionic electrons (IAEs) in two-dimensional electrides, using monolayer Ca$_2$N as a prototypical system. By computing the Landau-level (LL) spectrum of the electride bands forming the Fermi surface, we find a linear LL evolution with magnetic field that closely resembles the behavior of a… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Alloy engineering of Magnetic phases in two-dimensional Chromium Trihalides arXiv:2607.10030v1 Announce Type: new Abstract: Two-dimensional magnetic materials offer unique opportunities for exploring low-dimensional spin phenomena and next-generation spintronic devices. Chromium trihalides CrX3 (X = Cl, Br, I) belong to an important family of these materials, where alloying opens pathways for tailoring their electronic, magnetic, optical properties, and thermodynamic s… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Flux Jamming and Bimodal Dynamics in Bounded Spin Networks arXiv:2607.10045v1 Announce Type: new Abstract: We present a quantitative framework for predicting how kinetic barriers governing temperature dependent relaxation arise in finite square magnetic networks. By formulating a series of non homogeneous transfer matrices from the adjacency spectrum of the underlying graph, we show how local coordination shapes the energy landscape and identifies geom… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Engineering Topology by Design in Two-dimensional Materials arXiv:2607.10049v1 Announce Type: new Abstract: Two-dimensional topological insulators (2D TIs) have emerged as a cornerstone of next-generation spintronic technologies due to their robust, dissipationless edge states protected by time-reversal symmetry. Initial realizations of 2D TIs have primarily focused on materials with strong intrinsic spin-orbit coupling capable of driving band inversion… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Polarization Rotation Drives a Spin-Topological Transition in Ferroelectric Bismuth Monolayer arXiv:2607.10063v1 Announce Type: new Abstract: Bismuth monolayer is the first two-dimensional elemental ferroelectric and an appealing platform for coupling polar order to spin-orbit-driven topology. However, its microscopic switching mechanism remains elusive. Here, using first-principles lattice dynamics and symmetry-adapted mode analysis, we identify a previously overlooked rotational pathw… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Dynamical Nonrelativistic Spin Splitting via THz Nonlinear Phononics arXiv:2607.10091v1 Announce Type: new Abstract: Nonrelativistic spin splitting (NRSS) in collinear antiferromagnets offers a route to high-frequency spintronics immune to stray fields, but its dynamic control has remained elusive. We demonstrate, using density functional theory (DFT) and nonlinear phononics, that THz laser pulses can achieve ultrafast, reversible control of NRSS on picosecond t… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Correlated Plasmonic Excitation in Twisted Nematic Plasmonic Superlattices arXiv:2607.10122v1 Announce Type: new Abstract: Superlattices with twisted configurations, such as moire lattices, have recently been extensively exploited for their unique electronic, magnetic, and optical properties. One remarkable feature of nanoscale twisted superlattices is the distinct lattice symmetries and the continuous phase transitions between periodic or aperiodic phases, representi… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Chiral charge density waves in transition metal dichalcogenide arXiv:2607.10182v1 Announce Type: new Abstract: The emergence of chirality in the charge density wave (CDW) phase of 1$T$-TiSe$_2$ has recently attracted significant attention, yet its microscopic origin remains debated. The prevailing interpretation attributes chirality to a relative phase shift between the charge density components. Here, using density functional theory and symmetry analysis,… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Self-Consistent Phonon Spectral Functions and Thermal Transport Beyond the Quasiparticle Approximation arXiv:2607.10211v1 Announce Type: new Abstract: Anharmonic lattice dynamics shapes phonon spectra and thermal transport, yet first-principles linewidth calculations typically assume phonon quasiparticles with sharply defined frequencies. Here, we introduce a self-consistent spectral function framework that represents each phonon by its full frequency distribution and uses the resulting spectra … arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Enabling temperature controlled in-situ vapor dosing for lab source X-ray reflectivity measurements arXiv:2607.10339v1 Announce Type: new Abstract: X-ray Reflectivity (XRR) is a valuable technique for probing buried interfaces in complex systems relevant to thin-film, membrane, and battery applications, among others. However, many operando and in situ reflectivity cells are designed for use at synchrotron facilities, limiting the broader accessibility of these measurements. We present an XRR … arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Oxygen-nonstoichiometry-driven phase transition in $\mathrm{Sr}_{1-x}\mathrm{Nd}_{x}\mathrm{CoO}_{3-\delta}$ ($x = 0.1, 0.2, 0.3$) perovskites arXiv:2607.10346v1 Announce Type: new Abstract: We report a systematic study of the interplay between oxygen nonstoichiometry, crystal structure, and magnetic/electrotransport properties in $\mathrm{Sr}_{1-x}\mathrm{Nd}_{x}\mathrm{CoO}_{3-\delta}$ ($x = 0.1, 0.2, 0.3$). High-resolution neutron powder diffraction combined with synchrotron x-ray powder diffraction reveals that increasing the oxyg… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Anomalous Compressibility and Electronic Robustness of Metallic Delafossite PdCoO$_2$ under Pressure arXiv:2607.10361v1 Announce Type: new Abstract: The layered delafossite PdCoO$_2$ is an exceptional oxide metal whose ultrahigh conductivity arises from a Pd-derived nearly-free-electron band. Here, high-pressure single-crystal X-ray diffraction combined with first-principles calculations is used to investigate its structural, bonding, and electronic evolution up to 10 GPa. PdCoO$_2$ retains th… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Why Do Thick MOCVD-Grown beta-Ga2O3 Epilayers on (001) Substrates Crack: Crystallographic Origin arXiv:2607.10378v1 Announce Type: new Abstract: Thick, defect free epitaxial layers grown using industry standard techniques are a fundamental requirement for the widespread adoption of fully vertical power devices based on ultra wide bandgap gallium oxide (Ga2O3). However, metal-organic chemical vapour deposition (MOCVD) of such layers on native beta-Ga2O3 substrates with the largest diameter … arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science The evolution of AI from image interpretation toward scientific inference in nanoparticle electron microscopy arXiv:2607.10388v1 Announce Type: new Abstract: Artificial intelligence (AI) is transforming electron microscopy by enabling quantitative analysis of increasingly large and complex datasets for nanoparticle characterization. Recent advances in machine learning (ML) and deep learning (DL) have expanded microscopy from a descriptive imaging technique into a data-driven platform for structural int… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Connecting Diffuse Scattering to Atomic-Site-Resolved Occupancy and Displacement Fields through Fourier Filtering arXiv:2607.10440v1 Announce Type: new Abstract: Local structural correlations are encoded in diffuse scattering, but identifying atomic motifs that produce specific diffuse features can be challenging. We introduce MOSAIC, a computational framework for this task when an atomistic configuration is available and a phase-bearing scattering amplitude can be calculated. Our approach relies on applyi… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Chiral, Electronically Decoupled Layers of 1T'-WS2 Topological Insulator via Neutral-Molecule Intercalation arXiv:2607.10457v1 Announce Type: new Abstract: Monolayer 1T'-WS2 is predicted to be a two-dimensional topological insulator, but its intrinsic electronic properties are masked by strong interlayer coupling in its metallic and superconducting bulk parent phase, 2M-WS2. Isolating monolayers by mechanical exfoliation is also hindered by this coupling, preventing experimental examination of monola… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Surface Variables Description of Axion Topological Materials arXiv:2607.10509v1 Announce Type: new Abstract: We study the response of axion topological materials under the presence of external static electric and magnetic fields. We focus on the macroscopic quasi-static magnetoelectric response of topological insulators. We use techniques based on surface variables that have been previously employed in soft condensed matter problems for the description o… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Nonlinear Tellegen limit arXiv:2607.10584v1 Announce Type: new Abstract: The Tellegen limit is the fundamental electromagnetic stability bound on magnetoelectric media. We show that nonlinear magnetoelectric coupling gives rise to a new Tellegen limit, which we term the nonlinear Tellegen limit. Unlike the linear Tellegen limit, which is fixed by material parameters, the nonlinear Tellegen limit is field-tunable -- a s… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Spinel Ferrite-Based Materials for Electrochemical Applications: Synthesis, Applications, and Future Perspectives arXiv:2607.10823v1 Announce Type: new Abstract: Spinel ferrites have shown wide range of applications in various fields, including supercapacitors, Li-ion batteries, water splitting, chemical sensors, catalytic activity, high-frequency magnetic devices, and biomedical, hyperthermia, drug delivery applications., etc. This review focuses on the latest progress and trends on design of spinel ferri… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Catalog of Altermagnetism in Magnetic Wallpaper/Space Groups and Nonsymmorphic Altermagnets arXiv:2607.10857v1 Announce Type: new Abstract: Conventional altermagnetism, characterized by compensated collinear spin alignment and spin splitting, exhibits identical spin states at opposite momenta. In this work, we employ a non-spatial global symmetry $S$, the spinless time-reversal symmetry, which effectively replaces inversion symmetry in preserving the spin-state equivalence; hence, we … arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science A Cluster-Based Model of the Spectrum of Erbium-Doped GdVO$_4$ arXiv:2607.10924v1 Announce Type: new Abstract: Experimental observations of rare-earth ions doped into an antiferromagnetic crystal show an enriched optical spectrum. In this paper we present a cluster-based model to describe erbium ions doped into a gadolinium vanadate (Er:GdVO$_4$) host crystal, wherein the erbium ion couples directly to its four nearest neighbour gadolinium ions, which in t… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Measurement of Kerr rotation using a variable-angle polarizer method arXiv:2607.11002v1 Announce Type: new Abstract: The magneto-optical Kerr effect (MOKE) occurs when polarized light reflects from a magnetized surface, causing a small change in the polarization angle and state. Measurement of the rotation in the angle (Kerr rotation) is well established and typically performed close to the null configuration in a polarizer-analyzer geometry. However, accurate m… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Neural-network-based reconstruction of spin and orbital angular momentum from X-ray magnetic circular dichroism spectra arXiv:2607.11058v1 Announce Type: new Abstract: X-ray magnetic circular dichroism (XMCD) is a powerful probe of element-specific spin and orbital angular momentum. Conventional analyses based on sum rules, however, rely on integrated spectral intensities and can become insufficient when multiple parameters influence the spectral line shape. Here, we formulate XMCD analysis as an inverse problem… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Effect of annealing temperature on the structure and properties of co-sputtered Fe-Mn-Sn films near 2:1:1 ratio arXiv:2607.11077v1 Announce Type: new Abstract: Research in recent years has focused on the thin-film synthesis of high-quality ternary alloys, identified for their tunable properties and potential in spintronics (e.g., Heusler alloys, Kagome magnets). In a previous study, we identified the conditions for stabilizing Fe$_2$MnSn, a Kagome magnet with a high Curie temperature and magnetic anisotr… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Tiling decomposition multiplicity predicts stability of GaN(0001) surface reconstructions arXiv:2607.11105v1 Announce Type: new Abstract: The stable adatom configurations of a semiconductor surface have traditionally been sought by sampling: density functional theory (DFT) energies steer a heuristic or Bayesian search through a configuration space far too large to cover. Here we show that, for the GaN(0001)-$(6\times6)$ surface under the electron counting (EC) rule, the search can i… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science A Generalized Frank-Bilby Equation for Interfaces in Crystalline Materials arXiv:2607.11176v1 Announce Type: new Abstract: The classical Frank-Bilby equation (FBE) is commonly used to predict the structure of interfaces in crystalline materials in terms of interfacial dislocation networks. However, in general, the line defects in interfaces are disconnections, possessing both dislocation and step character, which are not captured by the classical FBE. As a result, the… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Electric field induced Berry curvature dipole in quasi-one-dimensional Bi$_4$I$_4$ arXiv:2607.11188v1 Announce Type: new Abstract: The nonlinear Hall effect in time-reversal symmetric materials offers a powerful probe into quantum geometry. Here, we investigate the electric-field-tunable nonlinear Hall response in few-layer $\text{Bi}_4\text{I}_4$ using comprehensive first-principles calculations across both its $\alpha$ and $\beta$ phases. Guided by symmetry analysis, we tra… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science Temperature dependence of charge-to-spin conversion in rhombohedral (110) bismuth thin film arXiv:2607.11189v1 Announce Type: new Abstract: The amplitude of charge-to-spin conversion, namely the spin Hall effect (SHE), in bismuth (Bi) strongly depends on its crystal orientation. The conversion efficiency at room temperature in rhombohedral (110) bismuth is notably large as expected from its large spin-orbit interaction, and such a large SHE is ascribed to the large effective g-factor … arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 14 Jul 2026 Research & science New dark matter theory could solve multiple cosmic mysteries at once Dark matter may be far more complicated than scientists once believed. A new study suggests it could consist of at least two different kinds of particles that slowly separate over time, with heavier particles sinking toward the centers of galaxies and lighter ones drifting outward. This simple idea could explain several puzzling cosmic observations that have frustrated astronomers for years, fr… ScienceDaily — Materials Science · 14 Jul 2026 Research & science Industry 4.0‐Enabled Circular Economy: Empirical Evidence and Strategic Roadmap for Manufacturing and Service Sectors Business Strategy and the Environment, EarlyView. Business Strategy and the Environment (Wiley) · 14 Jul 2026 Research & science Typhoons mix up bacteria and biochemistry After a typhoon surprised a research cruise, scientists took advantage of the unique sampling opportunity to reveal rapid changes in bacterioplankton communities and biogeochemical cycling. Phys.org — Environment tag feed · 14 Jul 2026 Research & science Scale Development for Ecotourism in the Context of Sustainability: A Perspective From the Gulf Countries Sustainable Development, EarlyView. Sustainable Development (Wiley) · 14 Jul 2026