Recycling news: 2026

Research & science Electrical Control of Altermagnetism in a Quasi-1D Magnet arXiv:2607.16856v1 Announce Type: new Abstract: Altermagnetism is a collinear magnetic state characterized by momentum-dependent spin splitting in fully compensated materials. While widely investigated in systems governed by three- or two-dimensional exchange interactions, its extension to quasi-one-dimensional magnets remains almost unexplored. Focusing on the experimentally established AgCrP$… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Specimen design for material parameter identification using topology optimization arXiv:2607.16865v1 Announce Type: new Abstract: Constitutive relations close the equations of continuum mechanics, and serve as a surrogate for a material in the design and engineering process. They are often specified in a parameterized form with parameters identified by experiment. In this paper, we propose a framework for identifying experimental configurations that are maximally informative… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Operando observation of strain relaxation in fatigued pearlitic steel arXiv:2607.16867v1 Announce Type: new Abstract: Pearlitic steels are the material of choice for railway wheels and rails, where their lamellar ferrite-cementite structure balances cost, strength, and wear resistance. However, in use, cyclic loading combined with frictional heat softens the steel, promoting fatigue and eventual failure. Here we use Dark-Field X-ray Microscopy (DFXM) to follow, o… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Planar Microcavities can Suppress Exciplex Formation and Increase the Emission Efficiency of Organic Semiconductors arXiv:2607.16886v1 Announce Type: new Abstract: Optical microcavities are widely used to control the emission of organic semiconductors, but their ability to reshape the molecular pathways that precede emission remains largely unexplored. Here we show that embedding a ZnPc:TPBi blend in a planar Fabry-P\'erot microcavity suppresses the formation of non-radiative exciplexes and removes bimolecul… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science The crystallographic quaternions and their product law arXiv:2607.16899v1 Announce Type: new Abstract: Unit quaternions are widely used in science to encode rotations because the quaternion product is more efficient than matrix product and more stable than Rodrigues product to calculate the composition of two rotations. However, quaternions in their usual form refers to a Cartesian basis; they cannot be used in crystallography as they are. The usua… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Baldereschi mean value points for three-dimensional Bravais lattices arXiv:2607.16974v1 Announce Type: new Abstract: The Baldereschi point of a crystal is a wavevector in the Brillouin zone at which every smooth periodic function of wavevector lies close to its mean value. Although originally introduced in the context of one-electron methods, mean-value points are ideal for explicitly correlated many-electron methods such as quantum Monte Carlo simulations, whic… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Giant Flat Band Amplification via Inertial Anchors arXiv:2607.17011v1 Announce Type: new Abstract: In electronic materials, flat bands are associated with compact electron localization, with implications for superconductivity, ferromagnetism and strongly correlated systems. The physical significance of their counterparts in elastic media is far less charted. Here we report a strategy to achieve elastic flat bands through an inertial retrofittin… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science STEP: Spin Tensor Equivariant Potential for Data-Efficient Learning of Magnetic Potential Energy Surfaces arXiv:2607.17129v1 Announce Type: new Abstract: Accurate and efficient modeling of magnetic potential energy surfaces remains challenging because spin-polarized first-principles calculations for diverse non-collinear spin-lattice configurations are computationally demanding. Here we introduce the Spin Tensor Equivariant Potential (STEP), a magnetic machine-learning interatomic potential that tr… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science XMatcher: An Open-Source Framework for X-Ray Diffraction Phase Identification arXiv:2607.17162v1 Announce Type: new Abstract: Powder X-ray diffraction (XRD) is widely used for crystalline phase identification, and recent machine learning approaches have demonstrated remarkable capabilities in accelerating diffraction interpretation. However, reliable phase assignment still requires transparent, evidence-based validation, particularly for complex samples where interpretab… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science First-principles electron-phonon scattering in real-time TDDFT arXiv:2607.17265v1 Announce Type: new Abstract: Real-time time-dependent density functional theory provides a first-principles description of coherent electron dynamics in laser-driven solids, but its unitary formulation cannot capture the irreversible scattering, relaxation, and decoherence processes that drive excited carriers toward equilibrium. Here, we develop a dissipative rt-TDDFT framew… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Interfacial thermal transport in Si/SiC and SiC/diamond heterostructures: effects of amorphous interlayers and SiC polytypes arXiv:2607.17330v1 Announce Type: new Abstract: This study examines phonon-mediated heat transfer across Si/SiC and SiC/diamond interfaces using non-equilibrium molecular dynamics simulations, emphasizing the influence of SiC polytypes and amorphous interlayers. For sharp interfaces, 4H-SiC exhibits considerably higher interfacial thermal conductance (ITC) than 3C-SiC, due to its broader active… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Response-function-optimized phase field modeling of solute trapping and solute drag in rapid alloy solidification arXiv:2607.17370v1 Announce Type: new Abstract: Quantitative prediction of rapid solidification microstructures requires phase field models that represent the velocity dependence of interfacial properties, including solute partitioning, kinetic liquidus response, solute drag, and kinetic undercooling. These response functions control both microsegregation and morphology selection, but are diffi… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Symmetry-Engineered Nonlinear Hall Response and Optical Response in Strained Monolayer Janus AsTeBr arXiv:2607.17385v1 Announce Type: new Abstract: The nonlinear Hall effect (NLHE) enables the generation of a transverse charge current in nonmagnetic materials with broken inversion symmetry while preserving time-reversal symmetry through the Berry curvature dipole (BCD). However, in crystals with $C_{3v}$ symmetry, the threefold rotational symmetry forces the BCD to vanish, thereby suppressing… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Mechanical loss in amorphous solids: spatial correlations, interacting transitions, and annealed thermodynamic pathways arXiv:2607.17434v1 Announce Type: new Abstract: The disordered and defect-rich structure of amorphous solids forms heterogeneous, high-dimensional energy landscapes. Such an energy landscape can be described by a discrete-state network of transitions between stable energy minima. Under low-frequency mechanical oscillations, defect-mediated, thermally activated transitions provide a microscopic … arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Going Beyond the d-band Center to Design Intermetallic Catalysts for Nitrogen Reduction: A High-Throughput DFT and Machine Learning Study arXiv:2607.17463v1 Announce Type: new Abstract: This study combines high-throughput DFT calculations with machine learning techniques to uncover the key descriptors governing the nitrogen reduction reaction (NRR) in intermetallic compounds (IMCs). A dataset of 47 bimetallic IMCs was constructed, and the adsorption energies of key intermediates (N2, N2H, and NH3) were systematically evaluated ac… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Non-equilibrium Effects in Vibrational Modes Pumped by Inelastic Tunneling arXiv:2607.17530v1 Announce Type: new Abstract: The properties of strongly correlated electron materials exhibit a surprising sensitivity to small lattice distortions, providing an opportunity for their tuning by selective distortion driving, usually achieved by optical excitations. Using inelastic electron tunneling in scanning tunneling microscopy, we demonstrate that at the surface of a stro… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science CuCrZr heat-sink irradiation performance reveals new challenges for thermonuclear fusion reactors arXiv:2607.17594v1 Announce Type: new Abstract: Commercial fusion energy requires materials that survive intense neutron bombardment whilst extracting extreme heat loads for conversion to electricity. The CuCrZr alloy, the leading heat-sink material for fusion reactors, derives its strength from a fine dispersion of nano-precipitates formed during prime-ageing heat-treatment. Whether this preci… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science d-band filling dictates magnetic stability in Mn- and Co-substituted FeRh alloys arXiv:2607.17688v1 Announce Type: new Abstract: The composition-dependent magnetic properties of B2-ordered \zfr~alloys with substitutional disorder on the Fe sublattice are investigated using first-principles calculations within the coherent potential approximation. By systematically substituting Mn and Co on the Fe sublattice, we establish $d$-band filling as the primary control parameter gov… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Efficient Quantum-Mechanical Modeling of Nonradiative Charge Transfer Processes arXiv:2607.17730v1 Announce Type: new Abstract: Nonradiative charge transfer processes play a central role in a wide range of physical phenomena, including reliability phenomena in semiconductor devices such as bias temperature instability, hysteresis, random telegraph noise, and trap-assisted tunneling. nonradiative multiphonon (NMP) theory provides a physically rigorous framework for describi… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Physically motivated iso-orbital indicator for meta-GGA exchange functionals arXiv:2607.17736v1 Announce Type: new Abstract: The iso-orbital indicator $\alpha = (\tau - \tau^\mathrm{vW})/\tau^\mathrm{UEG}$ is a key ingredient of meta-generalized gradient approximation (meta-GGA) functionals, but diverges in low-density tails , causing unphysical exchange potentials and systematic band gap errors as noted in [J. Chem. Phys. 150, 161101 (2019)]. We replace the denominator… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Localized crystallization of Ce:YIG thin films on Si using CO2 laser annealing for integrated nonreciprocal photonic device applications arXiv:2607.17905v1 Announce Type: new Abstract: Laser annealing (LA) technique has emerged as an effective method for localized crystallization of magneto-optical (MO) garnet thin films on semiconductor substrates. However, no studies have explored the crystallization and magneto-optical (MO) properties of cerium-substituted yttrium iron garnet (Ce:YIG, Ce1Y2Fe5O12) thin films for integrated ph… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Chemical filters for ultra-high-throughput materials screening and generation arXiv:2607.17910v1 Announce Type: new Abstract: Generative artificial intelligence is rapidly transforming materials design by enabling de novo exploration of immense chemical spaces. Yet a large proportion of AI-generated compositions remain implausible, violating established chemical principles, which limits the reliability and interpretability of generative materials design. Here, we introdu… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science The Recurrent Structural Frameworks of Stable Inorganic Materials arXiv:2607.17911v1 Announce Type: new Abstract: The number of possible crystal structures vastly exceeds the number realized among thermodynamically stable inorganic materials, suggesting that experimentally accessible structure space is organized around a limited set of preferred structural frameworks. Analysis of 23,160 structures on the thermodynamic convex hull identifies 6,820 distinct str… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Informatics Modeling of High Tg Polymers: Assessing the Role of Processing versus Chemistry arXiv:2607.17925v1 Announce Type: new Abstract: Despite the advances in structure-based modeling of polymer properties, accurately predicting glass transition temperature (Tg) is still challenging for polymers whose behavior is strongly influenced by intermolecular interactions and processing conditions. We previously developed a machine-learning model based on polymer topological descriptors t… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Spin-phonon interaction in a symmetry-enforced spin-polarized state arXiv:2607.17980v1 Announce Type: new Abstract: Symmetry-governed magnetic materials have emerged as a promising platform for spintronic functionalities without net magnetization or stray magnetic fields, motivating the exploration of how lattice dynamics couple to symmetry-derived spin-polarized electronic states. Understanding spin-phonon coupling in these systems is therefore essential for u… arXiv — cond-mat.mtrl-sci (Materials Science preprints) · 21 Jul 2026 Research & science Study of GeSn Selective Area Growth with Demonstration of SWIR Light Detection arXiv:2607.16497v1 Announce Type: new Abstract: As germanium-tin (GeSn) epitaxial growth quality continuously improves, the search for an efficient integration strategy of GeSn optoelectronics devices into complementary metal-oxide-semiconductor (CMOS) manufacturing line also accelerates. Selective area growth (SAG) on patterned substrate emerges as a promising approach for this quest, with loc… arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science Quantitative Infrared Thermographic Assessment of Hand Cooling Dynamics During Controlled Contact with Metal Plates arXiv:2607.16536v1 Announce Type: new Abstract: This study investigates the spatiotemporal thermal response of human hands during controlled contact cooling using short wave infrared (SWIR), mid wave infrared (MWIR), and long wave infrared (LWIR) thermography. Three participants simultaneously placed one hand on a cooling metal plate and the contralateral hand on a reference plate maintained ne… arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science Full-band reciprocal parametric amplification in coupled oscillator arrays arXiv:2607.16539v1 Announce Type: new Abstract: Parametric resonance provides a versatile mechanism to manipulate wave signals in time-modulated metamaterials, but typically operates within narrow wavelength or frequency ranges. Here, we show that one-dimensional arrays of coupled resonators can generically exhibit parametric amplification across an entire band under standing-wave parametric mo… arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science Determination of the roles of strain and tearing in single photon emission from nanoindented WSe$_2$ arXiv:2607.16567v1 Announce Type: new Abstract: Single-photon emission in two-dimensional single-layer WSe2 is attractive for the on-demand generation of quantum states of light. The electronic states that are responsible for single-photon generation preferentially form in regions of localized tensile strain, enabling deterministic positioning and strain engineering. Nanoindentation of single-l… arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science Delayed Coupling Restores Ising Phase Dynamics in Physical Oscillator Networks arXiv:2607.16634v1 Announce Type: new Abstract: Oscillator-based Ising machines, in which the phases of coupled self-sustaining oscillators evolve toward decreasing an Ising Hamiltonian, are commonly interpreted as physical realizations of the Ising model. This interpretation, however, requires the phase dynamics generated by the physical oscillator network to match a prescribed Ising dynamics.… arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science A Compact Reconfigurable Antenna for Single-RF-Chain Passive Multi-Target DOA Estimation arXiv:2607.16822v1 Announce Type: new Abstract: This work proposes a compact and hardware-efficient frequency- and radiation-pattern-reconfigurable antenna (FPRA) for passive multi-target direction-of-arrival (DOA) estimation using a single receive RF chain. The antenna consists of a sectorized circular patch loaded with 16 PIN diodes. By switching the diode states, the current-concentration bo… arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science Reconfigurable Graphene-Metasurface Analysis via an Eigenmode-Free Method-of-Lines Formulation arXiv:2607.17372v1 Announce Type: new Abstract: We present an eigenmode-free (EF) method-of-lines (MoL) formulation for the fast synthesis of reconfigurable graphene metasurfaces (MS). As the complexity of MSs increases, analysis by full-wave methods becomes challenging. The MoL is a considerably faster semi-analytical method where the electromagnetic equations are solved analytically along the… arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science Eigenmode analysis of a half-mode uniplanar metamaterial-inspired substrate integrated waveguide arXiv:2607.17403v1 Announce Type: new Abstract: In this work, we systematically analyze the propagation characteristics of a new half-mode uniplanar substrate integrated waveguide (SIW) based on complementary split-ring resonators (CSRR), using a finite element method (FEM) eigenmode solver. The proposed half-mode CSRR SIW has a simpler fabrication than the SIW, since the via are substituted by… arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science Computationally-tractable synthesis of an MXene metamaterial absorber with a 3D-printable spatially variable substrate by a local approach arXiv:2607.17413v1 Announce Type: new Abstract: We introduce the LOCABINACONN3D methodology to enable the computationally tractable synthesis of MXene metamaterial absorbers (MMA) based on spatially variable 3D-printable substrates. Spatially variable substrates offer enhanced absorption bandwidth compared to constant ones. Such MXene MMAs are typically synthesized by inverse design, which may … arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science Biodegradable, Millimeter-Scale Light-Emitting Sensors for Distributed Environmental Monitoring-Functional Pixie Dust arXiv:2607.17623v1 Announce Type: new Abstract: Methods for large-area, precise monitoring across natural environments are of growing interest due to pressing needs for sustainable management of rapidly increasing anthropogenic activities. Established approaches involve sparse spatial sampling and/or sequential measurements, while emerging techniques exploit miniaturized electronics or passive … arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science A Physics-Based Circuit Model for Magnetic Tunnel Junctions arXiv:2503.20813v3 Announce Type: cross Abstract: This work presents an equivalent circuit model for Magnetic Tunnel Junctions (MTJs) that accurately captures their magnetization dynamics and electrical behavior. Implemented in LTspice, the model is validated against direct numerical solutions of the Landau-Lifshitz-Gilbert-Slonczewski (LLGS) equation. It effectively simulates essential spintro… arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science The Origins of Transient Bimodality arXiv:2607.16531v1 Announce Type: cross Abstract: Many dynamical systems exhibit diverse modes of behavior. In biology, such modes can represent individual or cell fates. While the emergence of multimodality is commonly studied, transient bimodality is much less well understood. Under transient bimodality, a system moving from a well-defined initial to a final state transiently undergoes a bifu… arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science Chirality of a $Z_q$ Model as Directional Phase Shifts in Oscillator Networks arXiv:2607.16606v1 Announce Type: cross Abstract: Chirality in a discrete $Z_q$ spin interaction distinguishes clockwise from counterclockwise phase differences, but its manifestation in continuous nonlinear dynamics is unclear. We show that any pairwise $Z_q$ Hamiltonian admits a unique equilibrium-preserving embedding into a continuous phase-energy landscape that matches the discrete energy o… arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science Imaging of ultrasound specularity at cortical bone interfaces to detect unbalanced remodeling: A preliminary study arXiv:2607.16791v1 Announce Type: cross Abstract: The region near the interface between cortical bone and the medullary cavity (the endosteal surface) is of particular interest for the early detection of osteoporosis. This region is typically the first to exhibit signs of unbalanced remodeling (enlarged pores and increased surface roughness). In this study, we analyze ultrasound reflection at t… arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026 Research & science Permittivity Characterization of 3D-Printed Materials at Millimeter Waves arXiv:2607.16937v1 Announce Type: cross Abstract: In this study, we characterize the permittivity of various commercially available materials commonly used in 3D printing over the millimeter-wave frequency range of 70-110 GHz. The open-waveguide extraction method is employed to efficiently determine the permittivity of these 3D-printed materials, and key strategies for improving its accuracy ar… arXiv — physics.app-ph (Applied Physics preprints) · 21 Jul 2026