Recycling news: 2026

Research & science Macroscopic Polarization and Magnetization from Cavity Vacuum Fluctuations arXiv:2607.19612v1 Announce Type: new Abstract: Cavity light-matter interaction has recently emerged as a new avenue for manipulating material properties without driving fields. Here, we demonstrate that cavity vacuum fluctuations can induce macroscopic polarization (magnetization), even in materials that lack spontaneous polarization (net magnetization) in free space. Starting from the effecti… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Nitrospinics as a platform from orbital-torque memory to artificial intelligence arXiv:2607.19656v1 Announce Type: new Abstract: The exploration of energy-efficient and functional spintronics has attracted considerable attention. Orbital transport has opened new pathways for current-induced torque generation beyond the conventional spin transport based on the spin Hall effect. In addition, artificial intelligence computing has been demonstrated using spintronic devices. Fur… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Raman spectroscopy of van der Waals topological magnet GdGaI arXiv:2607.19663v1 Announce Type: new Abstract: We report polarization-resolved Raman spectroscopy of a van der Waals compound GdGaI that is a candidate for excitonic insulators. By combining the symmetry analysis with density functional theory calculations, we identify six Raman-active phonons. The spectra exhibit only the expected anharmonic hardening down to 4 K: no additional peaks, no soft… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Synergistic Interface Stability and High Room-Temperature Ionic Conductivity for Wide-Temperature All-Solid-State Batteries Based on Li6+xSixSb1-xS5I Electrolytes arXiv:2607.19664v1 Announce Type: new Abstract: Solid-state lithium-ion batteries (LIBs) are increasingly recognized for their exceptional energy density and safety. However, their widespread adoption is challenged by persistent issues such as thermal and electrochemical instability, dendrite formation, and limited compatibility with high-voltage cathodes. Sulfide-based solid electrolytes (SEs)… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Analytical Retrieval of Material Parameters in Monolayer Transition-Metal Dichalcogenides Based on a Solvable Exciton Model arXiv:2607.19698v1 Announce Type: new Abstract: We develop an analytical procedure to retrieve fundamental material parameters of monolayer transition-metal dichalcogenides from optical and magneto-optical exciton spectra, based on the solvable modified Kratzer model. The proposed retrieval procedure naturally consists of two complementary stages. In the first stage, explicit inversion formulas… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science A Thermodynamic Pinning Criterion for Two-Dimensional Structural Superlubricity arXiv:2607.19732v1 Announce Type: new Abstract: Incommensurability and elastic reconstruction do not by themselves define a structurally superlubric phase. We define fully sliding and pinned zero-temperature phases by $\limsup_{A\to\infty}\tau_{\rm dep}^{\max}(A)=0$ and $\liminf_{A\to\infty}\tau_{\rm dep}^{\min}(A)>0$, respectively; $\Lambda_n=|V_n|G_{n,i}[D_{\rm rel}^{-1}(\mathbf q_n)]_{ij}G_{… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Numerical exploration on unveiling the photovoltaic potential of MgXS3(X = Ti, Zr, Hf) chalcogenide perovskites arXiv:2607.19789v1 Announce Type: new Abstract: Lead-free chalcogenide perovskites offer a nontoxic and thermally robust path beyond Pb-based perovskite solar cells (PSCs), but their device-level behavior in realistic three-dimensional geometries remains insufficiently characterized. In this work, we investigate ZnSe/MgXS3(X = Ti, Zr, Hf)/Sb2S3 solar cell architecture where MgXS3 absorbers from… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science The origin of ferroelectricity, polarization and high resistivity in Aurivillius CaBi2B2O9 (B = Ta, Nb) arXiv:2607.19885v1 Announce Type: new Abstract: Aurivillius layered oxides are important candidates for high-temperature ferroelectric and piezoelectric application. In this work, we combine group theoretic analysis with first-principles calculations to systematically investigate the origin of ferroelectric phase transition, polarization, piezoelectric response, and intrinsic electrical insulat… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Symmetry-Based Design Rules for Second-Harmonic Generation in Stacked and Twisted MoS2 Bilayers arXiv:2607.19937v1 Announce Type: new Abstract: Understanding how stacking controls the nonlinear optical response of two-dimensional materials is key to designing van der Waals heterostructures with tailored functionalities. Here, we establish a comprehensive symmetry-based framework mapping the structural configuration of MoS2 bilayers across four point groups (D3h, D3d, C3v, C3) to their sec… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Interface-resolved structural properties of epitaxial Y$_3$Fe$_5$O$_{12}$/ Gd$_3$Fe$_5$O$_{12}$ bilayers grown on GGG(111) by pulsed laser deposition arXiv:2607.19979v1 Announce Type: new Abstract: Epitaxial Y$_3$Fe$_5$O$_{12}$ (YIG) and Gd$_3$Fe$_5$O$_{12}$ (GdIG) thin films, along with their bilayer heterostructures, were grown on Gd$_3$Ga$_5$O$_{12}$(GGG)(111) substrates using pulsed laser deposition. Structural properties were investigated using X-ray diffraction, reciprocal space mapping, and cross-sectional transmission electron micros… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Huge hole injection in tungsten dichalcogenide heterostructures without electric gating: a DFT study arXiv:2607.20032v1 Announce Type: new Abstract: Van der Waals heterostructures based on transition metal dichalcogenides, TMDs, provide a versatile platform for tailoring electronic properties through interlayer charge transfer, CT. Precise control of CT is essential because it directly determines the electronic structure and carrier concentration in atomically thin materials. Recently, the con… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Thickness-dependent crack suppression and wrinkle formation in freestanding BaTiO3 membranes arXiv:2607.20054v1 Announce Type: new Abstract: Freestanding ferroelectric oxide membranes offer a promising route toward silicon-integrated low-power electronic and memory devices, but reproducible membrane quality remains challenging, particularly in ultrathin BaTiO3 (BTO), where cracking and wrinkling hinder integration. Here, we show that crack and wrinkle formation in released BaTiO3 membr… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Kinetically-Arrested Phase Separation leads to Tunable Domain Structures in Vapor-Deposited Glasses arXiv:2607.20066v1 Announce Type: new Abstract: The characteristic length scale of phase-separated organic thin film blends is a critical structural parameter governing the performance and functionality of organic electronic devices. The arrested morphologies of vapor-deposited organic thin films result from the interplay between thermodynamic driving forces and kinetic constraints during depos… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science From MLIPs to Microstructure: A High-Throughput Computational Framework to Design Spinodal Alloys in High-Dimensional Composition Spaces via Analytic Derivatives of CALPHAD Model Predictions arXiv:2607.20077v1 Announce Type: new Abstract: Identifying regions of design space subject to spinodal decomposition is a critical component of alloy design in high-dimensional composition spaces. In cases where designers are seeking to exploit spinodal microstructures to tailor alloy properties, prediction of microstructure evolution and morphology is also needed. In this work, we present a M… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Role of Resonant $\mathbf{k}$-Points in the Transient Optical Response of Pumped Germanium arXiv:2607.20240v1 Announce Type: new Abstract: Pump-induced transient optical properties combine contributions from electronic states throughout the Brillouin zone, but the relative relevance of off-resonant and l-photon resonant crystal momenta has remained unexplored. We address this issue in pumped germanium by resolving the transient absorptive response into momentum-space classes defined … arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Competing ferromagnetic and antiferromagnetic interactions in non-altermagnetic Ru$_{1-x}$Cr$_{x}$O$_{2}$ arXiv:2607.20298v1 Announce Type: new Abstract: We investigate the proposal of hole doping RuO$_{2}$ via alloying with Cr ions to induce altermagnetism. Thin film samples of Ru$_{1-x}$Cr$_{x}$O$_{2}$ ($0 \leq x \leq 0.28$) were prepared by reactive magnetron co-sputtering on TiO$_{2}$ substrates, with epitaxial nature verified by X-ray diffraction and composition depth profiles determined by X-… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Optical Magnetic Switching in Odd-Parity Magnets with Spin-Orbit Coupling arXiv:2607.19483v1 Announce Type: cross Abstract: $p$-wave magnets exhibit odd-parity spin polarization in momentum space, with spin splitting that reverses under $\vec{k}\rightarrow -\vec{k}$, while preserving zero net magnetization. Here we show that, in odd-parity magnets with spin-orbit coupling, elliptically polarized light generates a momentum-independent spin-dependent term that dynamica… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Reading and Steering Representations of Materials-Science Mechanisms in an Open-Weight Language Model arXiv:2607.20058v1 Announce Type: cross Abstract: Large language models can answer scientific questions, yet a correct output does not reveal whether the model represents or uses the governing physics. Here we show that materials science mechanism information in the open-weight google/gemma-4-E4B-it model has three experimentally separable forms: concepts are readable in individual hidden state… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science A Theoretical Framework for the Coupling of Macroscale-Nanoscale Mechanochemical Phenomena in Condensed Matter arXiv:2607.20217v1 Announce Type: cross Abstract: The field of covalent mechanochemistry has transitioned from fundamental science to engineering applications, yet it lacks a robust theoretical framework for predicting reaction kinetics in condensed matter. Existing analytical models fail under realistic conditions where macroscopic strains drive molecular-scale deformations that are highly non… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Coupling phase interference effects in a multimode cavity magnonics system arXiv:2607.20234v1 Announce Type: cross Abstract: Coupling phases play a decisive yet often overlooked role in cavity magnonics, particularly in complex multimode systems. Here, we investigate phase-mediated interference effects in a cavity magnonics system comprising a four-post re-entrant microwave cavity coupled to Yttrium Iron Garnet (YIG) spheres. Using an input-output model that explicitl… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Magnetoresistive Memory in the Paramagnetic Phase of Eu$_5$In$_2$As$_6$ arXiv:2607.20287v1 Announce Type: cross Abstract: Magnetoresistive materials that respond sensitively to applied fields are central to modern data storage technologies. Here we unveil a novel Magnetoresistive Memory (MRM) in Eu$_5$In$_2$As$_6$, where the electrical resistivity depends not only on the magnitude but also on the history of the applied magnetic field. Such an effect has been report… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Probing the temperature dependence of dielectric function of ternary transition metal dichalcogenides: towards thermo-driven ultrathin photonic components arXiv:2607.20344v1 Announce Type: cross Abstract: Transition metal dichalcogenides (TMDs), along with their ternary derivatives, have attracted considerable attention mostly due to pronounced excitonic resonances emerging in visible (Vis) and near-infrared (NIR) spectral regions, enabling strong light-matter interaction. Nevertheless, a comprehensive insight of the temperature-dependent optical… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science A statistical understanding of oxygen vacancies in distorted high-entropy oxides arXiv:2504.11587v3 Announce Type: replace Abstract: High-entropy perovskite oxides have emerged as promising electrode materials for solid oxide electrolyzers. However, their compositional complexity makes the formation of oxygen vacancies, which influence properties such as oxygen ionic conductivity and thermal expansion, challenging to predict. Here, we experimentally measure changes in oxyge… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Orbital Hall Effect Enables Field-Free Magnetization Reversal in Ferrimagnets without Additional Conversion Layer arXiv:2506.07608v2 Announce Type: replace Abstract: The spin Hall effect (SHE) enables efficient electrical manipulation of magnetization through the spin Hall current \left(\mathbit{J}_{\mathbit{SHE}}\right), advancing energy-efficient spintronics. In parallel, the orbital Hall effect (OHE) offers an alternative pathway to SHE for converting charge current into an angular momentum flow. In thi… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Interpretable Nanoporous Materials Design with Symmetry-Aware Networks arXiv:2509.15908v4 Announce Type: replace Abstract: Reticular frameworks hold promise for diverse sustainable applications, yet their immense chemical space limits efficient and systematic design. While machine learning provides a compelling pathway to accelerate exploration, existing approaches often lack either interpretability or fidelity in linking crystal geometry to emergent properties. H… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Unraveling the defect landscape of wide-bandgap perovskites from electrical and photoelectrical characterization of thin films and solar cells arXiv:2510.19712v2 Announce Type: replace Abstract: Understanding and controlling defect states in halide perovskites is critical to advancing their performance in solar cells, yet their complex defect landscape remains elusive. Charged defects in perovskites can migrate under an applied electric field, complicating their characterization by conventional approaches. Here, we integrate current-v… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Ab initio Phase Diagram of Ta2O5 arXiv:2602.03649v3 Announce Type: replace Abstract: Tantalum pentoxide (Ta2O5) is a polymorphic wide-bandgap semiconductor with outstanding dielectric properties and widespread use in optical and electronic technologies. Its rich structural diversity, arising from multiple polymorphs accessible under different synthesis conditions, has made Ta2O5 a long-standing subject of interest. However, a … arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science First-Principles Analysis of Chirality-Induced Spin Selectivity at Molecule-Metal Interfaces in Photoemission arXiv:2603.22725v2 Announce Type: replace Abstract: Spin-resolved photoelectron spectroscopy (PES) probes chirality-induced spin selectivity (CISS), yet it remains unclear whether the measured spin polarization reflects molecular chirality itself or the broader electronic structure of the hybrid interface. We present a first-principles analysis of PES spin polarization at chiral molecule-metal … arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Systematic Study of Machine Learning Classification Algorithms of Zeolitic Imidazolate Framework Polymorphs arXiv:2604.09084v2 Announce Type: replace Abstract: Zeolitic Imidazolate Frameworks (ZIFs) are a family of metal--organic frameworks that feature metal centers tetrahedrally linked to imidazole-based ligands and adopt zeolite-like topologies. ZIFs formed by Zinc cations and imidazolate linkers exhibit a remarkable degree of polymorphism, which can be modulated by varying synthesis parameters or… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Data-Efficient Indentation Size Effect Correction in Steels Using Machine Learning and Physics-Constrained Neural Network arXiv:2604.27775v3 Announce Type: replace Abstract: Shallow nanoindentation enables mechanical characterization of thin films, individual phases, and other volume-constrained materials, but the measured hardness is inflated by the indentation size effect (ISE). Classical corrections such as Nix-Gao require a deep linear regime and fail when only shallow measurements are accessible. We present a… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Bilinear Flexo-Antiferrodistortive Coupling in Ferroelastics: Polar Twins, Antiphase Boundaries and Fingerprints of Alterelectricity arXiv:2606.29456v3 Announce Type: replace Abstract: Using the Landau-Ginsburg-Devonshire approach we show that the linear gradient-type coupling between the electric polarization vector and antiferrodistortive long-range order parameter pseudovector, that has the form of Lifshitz invariant and named "bilinear flexo-antiferrodistortive coupling", can emerge in all antiferrodistortive ferroelasti… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Phonon-Mediated Thermal Transport in Nanocrystalline Silicon Using Machine-Learning Interatomic Potentials arXiv:2607.06470v2 Announce Type: replace Abstract: Understanding phonon-mediated heat transport in structurally complex materials remains a central challenge for next-generation electronic and nanomechanical devices, where grain boundaries and interfacial disorder strongly limit thermal dissipation. Although classical interatomic potentials enable large-scale simulations, their limited transfe… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Modern Approach to Orbital Hall Effect Based on Wannier Picture of Solids arXiv:2604.08280v5 Announce Type: replace-cross Abstract: The orbital Hall effect (OHE) and its key figure of merit, the orbital Hall conductivity (OHC), are central to the emerging field of orbitronics. The OHC is conventionally computed via Kubo linear response theory, where the orbital angular momentum (OAM) operator is approximated through atom-centered projections that retain only local co… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science Monolithically Integrated VO$_2$ Mott Oscillators for Energy-Efficient Spiking Neurons arXiv:2604.21487v2 Announce Type: replace-cross Abstract: Brain-inspired non-Boolean computing and sensing enable energy-efficient, error-tolerant, and highly parallel information processing, yet their deployment remains limited by the lack of compact, scalable spiking hardware. Mott phase-transition materials offer a promising route because their abrupt insulator-to-metal transitions enable ne… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 23 Jul 2026 Research & science The Direct and Indirect Effects of Genetics and Education arXiv:2607.19562v1 Announce Type: new Abstract: Genes associated with educational attainment causally improve labour market income, but the economic mechanism behind this relationship is not clear. Using quasi-random variation in genetic inheritance across siblings in the UK Biobank, I estimate the causal effect of the Education PolyGenic Index (Ed PGI) on education and income. A one standard d… arXiv — econ.GN (General Economics preprints) · 23 Jul 2026 Research & science Bounded Attention and Attenuated Elasticities arXiv:2607.19929v1 Announce Type: new Abstract: We study how bounded attention affects the structural estimation of the elasticity of substitution. In a sparse-max model, equilibrium prices and expenditure shares are observationally equivalent to those of a rational market. Its elasticity equals the structural elasticity scaled by the attention weight. The supply-side orthogonality condition of… arXiv — econ.GN (General Economics preprints) · 23 Jul 2026 Research & science Catastrophic disruption cascades driven by the nonlinearity of systemic risk arXiv:2607.20068v1 Announce Type: new Abstract: Whether the COVID-19 pandemic or the Iran war, recent events have highlighted the systemic fragility of supply chains. Due to highly specific and mutual buyer-supplier dependencies, even the failure of a single firm can cause system-wide economic disruptions in the form of cascading failures up and down the supply chain network. Only recently has … arXiv — econ.GN (General Economics preprints) · 23 Jul 2026 Research & science Licensing and Innovation Regimes in Pharmaceutical R&D arXiv:2607.20365v1 Announce Type: new Abstract: We study how licensing affects the allocation of innovation in pharmaceutical R&D. We develop a model in which projects differ in both quality and innovation regime, distinguishing between incremental and novel innovations. Information precision is higher for incremental projects and lower for novel ones, generating different equilibrium dynamics … arXiv — econ.GN (General Economics preprints) · 23 Jul 2026 Research & science Reconstructing Large Scale Production Networks arXiv:2512.02362v3 Announce Type: replace Abstract: Firm-to-firm production networks matter for aggregate propagation, but they are rarely observed. This paper reconstructs national-scale, weighted firm-to-firm networks from two public objects: a sectoral input--output table and the distribution of firm sizes by sector. The algorithm first draws a binary buyer-seller backbone from a sector-awar… arXiv — econ.GN (General Economics preprints) · 23 Jul 2026 Research & science Information Aggregation with AI Agents arXiv:2604.20050v3 Announce Type: replace Abstract: Can Large Language Models (AI agents) aggregate dispersed private information through trading and reason about the knowledge of others by observing price movements? We conduct a controlled experiment where AI agents trade in a prediction market after receiving private signals, measuring information aggregation by the log error of the last pric… arXiv — econ.GN (General Economics preprints) · 23 Jul 2026