Spintronics-Info - Spintronics Industry Portal

New method enables precise and rapid switching of the helicity of magnetic vortices

Roni Peleg — Wed, 22 Apr 2026 18:41:33 +0300

Researchers from Nankai University, South China Normal University and additional institutes have introduced a new approach to precisely and rapidly switch the helicity of magnetic vortices.

Their novel method involves the use of extremely short laser pulses and a magnetic field applied perpendicular to the surface of a nano-engineered material. As part of their study, the researchers first engineered tiny magnetic vortices in a magnetic material made up of 80% of nickel (Ni) and 20% iron (Fe). This magnetic alloy is promising for the development of spintronics as it possesses advantageous magnetic properties.

Microchip Technology and EverSpin sign 10-year agreement

Roni Peleg — Tue, 14 Apr 2026 08:47:23 +0300

Everspin Technologies has announced a strategic manufacturing agreement with Microchip Technology to expand on-shore production of its MRAM and tunnel magnetoresistive (TMR) sensor products. The initial 10-year deal, which can be extended in two-year increments, will see Everspin establish a copy exact (plus) MRAM line at a Microchip semiconductor fabrication facility in Oregon, mirroring its existing line in Chandler, Arizona.

Under the agreement, Everspin will transfer its magnetic technology and MRAM manufacturing process into Microchip’s Oregon fab while retaining ownership of its spintronic IP and process know-how, using Microchip’s foundry capacity to scale output. This added line is designed to increase wafer capacity for MRAM and TMR devices, provide a fully on-shore second source, and support long-term supply continuity for spintronics-based non-volatile memory and sensor products well into the next decade.

Interfacial Ising superconductivity in a graphene‑capped gallium trilayer for potential spintronics applications

Roni Peleg — Tue, 14 Apr 2026 08:29:25 +0300

Researchers from Penn State, University of Oxford, Zhejiang University, Diamond Light Source and the University of North Texas have engineered an atomically confined gallium trilayer between graphene and silicon carbide that hosts robust Ising‑type superconductivity under strong in‑plane magnetic fields. This interface‑driven superconducting state in a light‑element heterostructure opens intriguing opportunities for integrating superconductivity with spin‑based functionalities in future spintronics devices.

The device consists of just three atomic layers of gallium sandwiched between a graphene overlayer and a 6H‑SiC(0001) substrate, grown using plasma‑free confinement epitaxy assisted by a carbon buffer layer. Within this ultra‑thin “quantum well,” superconductivity emerges at low temperatures, while the graphene capping layer protects the gallium from oxidation and contamination and the SiC substrate provides a structurally and electronically active interface. The result is a clean, strongly confined 2D superconducting channel whose properties are dominated by interfacial quantum interactions.

Low-current spintronic Kapitza pendulum enables probabilistic magnetic states

Roni Peleg — Mon, 13 Apr 2026 06:00:00 +0300

Researchers from University College London, University of Leeds, Tohoku University, Imperial College London and Japan Atomic Energy Agency have demonstrated that spin transfer torques in nearly isotropic CoFeB-based magnets can dynamically stabilize magnetic states that are unstable in equilibrium, realizing a nanoscale spintronic analogue of the Kapitza pendulum.

The team uses MgO∣CoFeB∣W multilayers, where the demagnetizing field favors in-plane magnetization while an interface-induced perpendicular magnetic anisotropy (PMA), tuned by post-growth annealing, counter-balances this tendency. By carefully optimizing the growth-annealing protocol, the shape and interface anisotropies almost cancel, yielding magnets with vanishingly small effective anisotropy that are nearly isotropic on the Bloch sphere. This near-isotropy is crucial because it suppresses conventional auto-oscillations and lowers the critical current needed to drive the system into a strongly nonlinear dynamical regime.

Novel spintronic device can store data in four stable states

Roni Peleg — Sat, 11 Apr 2026 06:00:00 +0300

Researchers from the University of Maryland, University of California, South Dakota School of Mines and Technology, East China Normal University, KAUST and other institutes recently reported all‑van der Waals multiferroic tunnel junctions (MFTJs) that combine ferromagnetism and ferroelectricity in a single nanoscale spintronic device, enabling four non‑volatile resistance states for multibit memory operation.

These multistate junctions are realized by vertically stacking three atomically thin crystals: two ferromagnetic electrodes and a ferroelectric tunnelling barrier, all obtained by mechanical exfoliation and then assembled into a clean, defect‑sparse heterostructure. In their prototypical structure, Fe₃GeTe₂/CuInP₂S₆/Fe₃GeTe₂, multilayer Fe₃GeTe₂ serves as the ferromagnetic electrodes, while CuInP₂S₆ (CIPS) provides a ferroelectric spacer with switchable polarization. Because the layers are coupled by van der Waals forces rather than epitaxial bonding, the stack avoids stringent lattice‑matching and chemical‑compatibility constraints that hinder oxide‑based MFTJs and is far less susceptible to interfacial defects and interdiffusion.

Researchers tune skyrmion textures in 2D Fe3GeTe2 by thickness and field

Roni Peleg — Thu, 09 Apr 2026 09:43:01 +0300

A team of scientists at the U.S. Department of Energy’s (DOE) Argonne National Laboratory, Northwestern University, the University of Edinburgh, the Donostia International Physics Center and the University of Arkansas has revealed how magnetic domains behave inside 2D van der Waals magnets based on Fe₃GeTe₂(FGT), providing a roadmap for tuning skyrmions using material thickness and magnetic‑field conditions.

The researchers worked with a thin, layered FGT flake whose thickness changed gradually across the sample, creating regions that behave differently magnetically while still being part of the same crystal. Because FGT in this study is magnetic only at low temperature, the flake was cooled with liquid nitrogen to cryogenic temperatures while an out‑of‑plane magnetic field was applied (field cooling), setting up well‑defined initial domain patterns.

Researchers demonstrate coherence transfer from THz magnons to charges in NiO

Roni Peleg — Wed, 08 Apr 2026 06:00:00 +0300

Researchers from the University of Konstanz, Institute of Science Tokyo and TU Dortmund University recently demonstrated that coherent terahertz (THz) magnons can transfer their coherence to electronic charges in the insulating antiferromagnet NiO, providing a crucial step toward energy‑efficient, THz‑speed spintronic devices compatible with CMOS technology. The core idea is that optically driven THz spin waves imprint a coherent, charge‑dominated signal onto the material’s optical response, realizing a spin‑to‑charge conversion stage mediated by light.

Collective spin excitations - magnons, i.e., quantized spin waves of large spin ensembles - naturally operate in the THz range and promise low‑loss information transfer, but integrating them with conventional electronics requires converting their spin signal into an electrical one. In this work, the team uses NiO as a prototypical dielectric antiferromagnet and excites coherent THz magnons with femtosecond laser pulses whose photon energy lies below the 4 eV bandgap, so that the primary excitation channel addresses the spin system rather than creating a dense electron–hole plasma.

Researchers uncover self-induced Floquet states in nanoscale magnetic whirlpools

Roni Peleg — Tue, 07 Apr 2026 10:43:34 +0300

Researchers from Helmholtz-Zentrum Dresden-Rossendorf, CNRS AND Radboud University recently demonstrated that tiny magnetic vortices can host self-induced Floquet states driven purely by internal magnon dynamics, without the need for high-power laser fields. By periodically modulating the vortex core with low-power microwave excitation, they engineer Floquet bands in the magnon spectrum and observe clear frequency-comb signatures in nanometer-scale magnetic disks.

Floquet engineering uses a periodic drive to create effective Hamiltonians and band structures that do not exist in equilibrium, enabling exotic states and modified spin interactions. In this work, the periodic drive is not an external optical field but arises from internal modes of a magnetic vortex in an ultrathin disk, where the magnetization curls in-plane and forms a nanoscale vortex core with out-of-plane orientation. When microwave magnons are driven strongly enough, nonlinear coupling transfers energy into a circular gyration of the vortex core, which then acts as a time-periodic perturbation that renormalizes the magnon band structure.

Merging magnetism and superconductivity could enable loss‑free spin flow

Roni Peleg — Tue, 24 Mar 2026 13:23:10 +0200

Researchers from the University of British Columbia, Max Planck Institute for Solid State Research and University of Nevada have proposed a new class of quantum materials - superconducting altermagnets - that could carry persistent spin-polarized currents with zero dissipation, marking a potential breakthrough in superconducting spintronics.

The team's theoretical study shows how these materials can host spin supercurrents that remain stable even in the presence of spin-orbit coupling (SOC) and magnetic disorder - conditions that usually extinguish spin transport in normal metals.

Recent spintronics research and industry news - March 2026

Ron Mertens — Mon, 23 Mar 2026 14:39:21 +0200

Here are some recent and popular spintronics industry and research news that you may find of interest:

Spin-controlled photon emission in 2D perovskites enables quantum communication

Roni Peleg — Sat, 21 Mar 2026 12:46:04 +0200

A University of North Carolina at Chapel Hill research team has demonstrated a novel way to encode quantum information directly within the light produced by two-dimensional perovskites - opening a potential path to simpler, more efficient quantum communication systems. The study explores how spin dynamics in two-dimensional organic–inorganic hybrid perovskite (2D-OIHP) quantum wells can generate polarization-encoded photons suitable for secure communication protocols.

Two-dimensional perovskites are well known for their performance in light-emitting and photovoltaic devices, but the UNC team, led by Professor Andrew Moran, has shown they can also act as microscopic light sources whose intrinsic exciton spin behavior defines the polarization of emitted photons. When ultrafast laser pulses excite the material, they generate pairs of bound charge carriers - excitons - whose spins determine the polarization of emitted light.

Wafer-scale MoS₂ cuts surface damping in permalloy spintronic films

Roni Peleg — Sat, 07 Mar 2026 13:04:04 +0200

Researchers from The University of Manchester have discovered that interfacing magnetic thin films with atomically thin molybdenum disulfide (MoS₂) fundamentally alters how these films dissipate energy - a step toward practical, wafer‑scale 2D spintronic devices.

Using ferromagnetic resonance (FMR) spectroscopy, the team investigated spin pumping and damping mechanisms in large‑area transition‑metal dichalcogenide (TMD)-ferromagnet heterostructures, specifically MoS₂–Ni₀.₈Fe₀.₂ bilayers with varying ferromagnetic thickness. The MoS₂ was grown using chemical vapor deposition (CVD), an industry‑compatible approach that allows uniform monolayer and bilayer coverage across wafer‑scale samples.

Researchers demonstrate all-optical switching of spin–valley ferromagnetism in twisted MoTe₂

Roni Peleg — Thu, 05 Mar 2026 06:00:00 +0200

Researchers from ETH Zürich, University of Washington, University of Basel and National Institute for Materials Science have demonstrated all-optical control over the spin-valley polarization in twisted molybdenum ditelluride (t‑MoTe₂) homobilayers - a step toward dynamically reconfigurable quantum materials and optically defined topological circuits. The work shows how circularly polarized light can reversibly switch the magnetic orientation of a strongly correlated ferromagnetic state, all without changing the sample temperature.

The experiments, led by Prof. Ataç Imamoğlu (ETH Zürich), Prof. Tomasz Smoleński (University of Basel), and colleagues, exploit a system where two atomically thin MoTe₂ layers are stacked with a small twist angle. This twist creates a moiré superlattice with flat, valley‑contrasting Chern bands, giving rise to highly correlated quantum phases - including Chern insulators and ferromagnetic metals - depending on the electron filling. Because the electronic bands are nearly dispersionless, electron-electron interactions dominate, resulting in spontaneous spin alignment even at cryogenic but steady temperatures.

Twist-driven super-moiré skyrmions reach 300 nm in CrI₃

Roni Peleg — Tue, 03 Mar 2026 16:15:02 +0200

Researchers from the University of Stuttgart, University of Washington, University of Edinburgh, University of Waterloo, the National Institute for Materials Science, and Oak Ridge National Laboratory have demonstrated a new type of long‑range magnetic order in twisted double‑bilayer chromium triiodide (CrI₃).

The study reports a “super‑moiré” magnetic state that extends far beyond the conventional moiré unit cell - highlighting twist angle as a powerful tool to engineer topological spin textures in 2D magnets.

Researchers demonstrate electrical control of 2D magnetism via ferroelectric switching

Roni Peleg — Wed, 25 Feb 2026 15:55:19 +0200

Researchers from the University of Maryland, King Abdullah University of Science and Technology (KAUST), Nankai University, Cornell University, University of Wisconsin–Madison, Oak Ridge National Laboratory, University of California, University of Tennessee, Air Force Research Laboratory and Rice University recently reported the first experimental realization of non-volatile, electrical control of magnetism in a two-dimensional (2D) material system. The collaborative work demonstrates a robust interferroic magnetoelectric coupling in a van der Waals heterostructure made of atomic layers of ferroelectric CuCrP₂S₆ and ferromagnetic Fe₃GeTe₂ - marking a milestone for 2D multiferroic research and energy-efficient spintronic applications.

At the heart of this work lies the long-standing challenge of stabilizing ferroic order in truly two-dimensional materials. While ferroelectric and ferromagnetic phenomena are both well-established in bulk materials, their coexistence in 2D is difficult to maintain due to depolarization fields and thermal fluctuations that destabilize long-range order. The team overcame these limitations by stacking exfoliated layers of the ferroelectric CuCrP₂S₆ and ferromagnetic Fe₃GeTe₂ with atomically clean interfaces, enabling short-range, interfacial coupling between their ferroic orders.

Intrinsic spin-triplet pairing indications found in NbRe superconductors

Roni Peleg — Sun, 22 Feb 2026 10:20:55 +0200

Researchers from Italy's Università degli Studi di Salerno, CNR-SPIN and the Norwegian University of Science and Technology (NTNU) recently found that the noncentrosymmetric superconductor niobium–rhenium (NbRe) could be the long-sought candidate for intrinsic spin-triplet pairing - a key ingredient for future superconducting spintronics and quantum computers.

Spin-triplet superconductors differ fundamentally from conventional “singlet” superconductors: their Cooper pairs carry spin as well as charge. This allows them to sustain spin-polarized supercurrents that can travel without resistance. Such a property would enable lossless spin transmission and stability in quantum information systems - a long-standing challenge in the field.

Topological nodal lines turn elemental cobalt into a room‑temperature spintronics platform

Roni Peleg — Sun, 15 Feb 2026 09:44:33 +0200

Researchers from Helmholtz-Zentrum Berlin für Materialien und Energie (HZB), Donostia International Physics Center, Leibniz Institute for Solid State and Materials Research Dresden and IMDEA Nanoscience have identified ferromagnetic hexagonal close-packed (hcp) cobalt as a prototypical magnetic nodal-line semimetal that remains robust at room temperature, turning a classic ferromagnet into a highly tunable topological platform for spintronics.

Cobalt has long been regarded as a textbook elemental ferromagnet with a supposedly well-understood band structure, examined in detail for over 40 years. Using spin- and angle-resolved photoemission spectroscopy (spin-ARPES) at the BESSY II synchrotron, the team now observes entangled, spin-polarized bands that cross along extended paths in momentum space without opening an energy gap, even at room temperature. These measurements reveal a dense network of magnetic nodal lines - topological band crossings between two spin-polarized states - that give rise to fast, robust charge carriers central to future information and spin-based technologies.

Researchers achieve field‑free switching of hard ferromagnets with giant spin‑orbit torque

Roni Peleg — Thu, 29 Jan 2026 08:45:38 +0200

Researchers at the University of Waterloo recently demonstrated fully electrical, field‑free control of perpendicular magnetization using spin‑orbit torque (SOT) in a low‑symmetry 2D magnet/topological‑insulator heterostructure, paving the way for scalable, energy‑efficient spintronic memory and logic devices.

Stacking the three-fold symmetry of BiSbTe on top of the two-fold symmetry of intercalated-CrTe, the interface only permits a unidirectional symmetry which produces an extremely strong out-of-plane spin torque and can deterministically switch a very hard, perpendicular magnet with ease. Image credit: University of Waterloo

Modern MRAM and related spintronic memories need dense, robust perpendicular magnetic anisotropy (PMA) bits that can be switched deterministically with low energy consumption, but conventional SOT easily switches only in‑plane moments and typically requires an external bias field to tilt perpendicular spins “up” or “down”. In perpendicular configurations, bits point out of the film plane, which boosts storage density but makes the energy‑efficient, fully electrical control of their state difficult. Standard heavy‑metal/ferromagnet stacks already break out‑of‑plane symmetry and can support in‑plane switching, yet deterministic out‑of‑plane reversal demands breaking additional in‑plane symmetries - usually via an applied magnetic field, which adds circuit complexity, power overhead, and risks cross‑talk between neighboring bits.

Spin-size-controlled Kondo physics opens a new route to magnetic quantum materials

Roni Peleg — Sun, 25 Jan 2026 10:58:42 +0200

A research team, led by Associate Professor Hironori Yamaguchi at Osaka Metropolitan University, has found that the Kondo effect behaves differently depending on spin size. In systems with small spins, it suppresses magnetism, but when spins are larger, it actually promotes magnetic order. This discovery highlights a new quantum boundary with major implications for future materials.

The team created a new type of Kondo necklace using a carefully engineered organic inorganic hybrid material made from organic radicals and nickel ions. This precise design was achieved using RaX-D, a molecular design framework that allows fine control over crystal structure and magnetic interactions. The researchers had previously succeeded in building a spin-1/2 Kondo necklace. In their latest work, they extended the system by increasing the localized spin (decollated spin) from 1/2 to 1. Thermodynamic measurements revealed a clear phase transition, showing that the system entered a magnetically ordered state.

Rhombus-shaped nanographenes enable room-temperature pure spin currents in all-carbon spintronic devices

Roni Peleg — Wed, 21 Jan 2026 15:28:35 +0200

Researchers from Suzhou University of Science and Technology, Yancheng Polytechnic College and Soochow University have investigated spin transport in spintronic devices built from rhombus-shaped nanographenes (RNGs) contacted by zigzag graphene nanoribbon (ZGNR) electrodes via carbon chains. These RNGs exhibit measurable magnetic exchange coupling and robust all‑carbon magnetism, making them promising candidates for room‑temperature spintronic applications.

In the parallel magnetic configuration of the two ZGNR electrodes, the devices show a pronounced spin‑filtering effect that allows only spin‑up electrons to pass through. The connection geometry between the RNGs and the carbon chains is found to strongly influence the quantum transport characteristics.

Researchers succeed in directly tracking how chiral nanowires control electron spins

Roni Peleg — Sat, 17 Jan 2026 09:14:29 +0200

An international team of researchers, led by Ulsan National Institute of Science and Technology (UNIST), has directly observed how electron spins behave in real space, providing a new understanding of this complex interaction.

The phenomenon where electron spins align in a specific direction after passing through chiral materials is crucial for future spin-based electronics, yet the underlying mechanism has been unclear. The team’s work shows that chiral materials actively change the spin orientation of electrons, overturning the long-held belief that these materials simply filter spins without affecting their direction.

Unexpected feature in transitional metal-based compounds could enable a new class of spintronic materials

Roni Peleg — Mon, 29 Dec 2025 16:33:41 +0200

Scientists at Ames National Laboratory, in collaboration with Indranil Das’s group at the Saha Institute of Nuclear Physics (India), recently found a surprising electronic feature in transitional metal-based compounds that could pave the way for a new class of spintronic materials for computing and memory technologies.

The feature was found in Mn₂PdIn, a Heusler compound - a type of alloy valued for its tunable magnetic and electronic properties. These alloys can exhibit behaviors not seen in their individual elements, making them prime candidates for spintronic applications.

Geometry‑programmed spin chirality for zero‑field chiral magnonics

Roni Peleg — Sat, 20 Dec 2025 13:54:01 +0200

Researchers from EPFL, Max Planck Institute and HZB have shown that spin chirality can be engineered purely by 3D shape in an otherwise non‑chiral ferromagnet, unlocking spontaneous MChA at room temperature and zero applied field.

The device is a hollow “Archimedean screw”: a 3D‑printed polymer tube made by two‑photon lithography and conformally coated with a ~30 nm polycrystalline Ni layer by ALD, forming a twisted nanotube whose left‑ or right‑handed geometry imprints the magnetic twist. The curved, twisted shape creates a helical magnetization pattern with a built‑in magnetic “circulation”, which breaks symmetry between +k and −k spin waves without needing exotic chiral crystals or external magnetic fields.

Researchers reveal spin–orbit-driven AC currents from Larmor spin precession in semiconductors

Roni Peleg — Wed, 17 Dec 2025 13:47:07 +0200

Researchers from RWTH Aachen University, Ioffe Institute and Forschungszentrum Jülich GmbH have shown that the collective motion of spin-polarized electrons can spontaneously generate ultrafast electric currents - without any applied voltage.

In their experiments on strained n-InGaAs semiconductor layers, the team found that when electrons are initialized in the same spin state and exposed to a magnetic field, they produce an alternating current (AC) at gigahertz frequencies. This current persists until the coherent spin precession of the electrons dephases. Its amplitude scales linearly with both the strength of the spin–orbit interaction and the magnetic field, revealing a direct link between spin dynamics and charge motion in solid-state systems.

Researchers report confinement-induced spin-texture reorientation in ion-patterned nanomagnets

Roni Peleg — Wed, 10 Dec 2025 10:10:15 +0200

Researchers at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) have partnered with NTNU, the Norwegian University of Science and Technology in Trondheim, and the Institute of Nuclear Physics in the Polish Academy of Sciences to develop a method that facilitates the manufacture of particularly efficient magnetic nanomaterials in a relatively simple process based on inexpensive raw materials.

Using a highly focused ion beam, they imprint magnetic nanostrips consisting of tiny, vertically aligned nanomagnets onto the materials. This geometry makes the material highly sensitive to external magnetic fields and current pulses.

Spatiotemporal visualization of current-induced spin switching in the antiferromagnetic Weyl semimetal Mn₃Sn

Roni Peleg — Fri, 05 Dec 2025 10:55:47 +0200

A research team, led by Ryo Shimano of the University of Tokyo, has explored ultrafast spin dynamics in the antiferromagnetic Weyl semimetal Mn₃Sn, providing direct visualization of current-induced switching processes at the sub-nanosecond scale. Mn₃Sn is of particular interest for spintronic applications due to its non-collinear spin structure, which gives rise to distinct magnetic and electrical properties at room temperature.

Using spatiotemporally resolved magneto-optical Kerr effect imaging with electrical pulses as short as 140 picoseconds, the team captured the evolution of magnetic domains during switching in polycrystalline Mn₃Sn films. The measurements revealed two distinct regimes of magnetization reversal depending on the intensity and duration of the applied current pulse: a non-thermal process where switching occurs without disrupting the antiferromagnetic order, and a thermally assisted process involving transient heating beyond the magnetic ordering temperature.

Researchers report 'twisted metallic magnet' for next‑generation spintronics and electronics

Roni Peleg — Sat, 29 Nov 2025 09:34:01 +0200

Researchers from The University of Tokyo, RIKEN Center for Emergent Matter Science (CEMS), Tokyo Metropolitan University, Karlsruhe Institute of Technology (KIT), Gdańsk University of Technology, High Energy Accelerator Research Organization, Japan Atomic Energy Agency, and additional institutes recently reported a metallic “twisted” antiferromagnet that realizes p‑wave magnetism and delivers a strong, easily readable spintronic signal. This material links a helical spin texture directly to charge transport, pointing toward faster, cooler, and more compact spin‑based memory and logic technologies.

In this compound, atomic magnetic moments do not all align in one direction as in a standard magnet; instead, they form a helix along a crystal axis, creating an antiferromagnetic “twisted” state with nearly zero net magnetization. This helical texture produces an odd‑parity (p‑wave) spin splitting of the conduction electrons, so electrons moving in different directions carry oppositely polarized spins without relying on strong electronic correlations.

The Faraday effect’s hidden magnetic dimension

Roni Peleg — Sun, 23 Nov 2025 08:20:15 +0200

A recent study led by Dr. Amir Capua and Benjamin Assouline at the Hebrew University of Jerusalem found that the magnetic part of light plays a direct, previously overlooked role in the Faraday effect - challenging nearly 180 years of common perception in optics and magnetism.

The Faraday effect is a classic phenomenon where the polarization of light rotates as it passes through a material in the presence of a static magnetic field. Historically, this rotation was explained almost entirely by the electric field of light interacting with charges in the material, while the magnetic field of light was thought negligible at optical frequencies. This new research demonstrates that the oscillating magnetic field of light itself exerts a torque on atomic spins in the material and contributes meaningfully to the rotation observed.

Researchers develop a digital spintronic compute-in-memory macro for energy-efficient artificial intelligence processing

Roni Peleg — Thu, 30 Oct 2025 09:29:08 +0200

Researchers from at Southern University of Science and Technology, Xi'an Jiaotong University and other institutes recently reported a spintronic compute-in-memory (CIM) macro designed to improve computational efficiency in artificial intelligence hardware. The device is a 64-kb non-volatile digital CIM macro fabricated using 40-nm spin-transfer torque magnetic random-access memory (STT-MRAM) technology, which stores information through the magnetic orientation of nanometer-scale layers.

Conventional computing architectures separate memory and processing units, requiring frequent data transfer that increases latency and energy consumption. CIM designs address this limitation by integrating storage and computation, though most prior implementations have relied on analog operations that constrain accuracy, scalability, and robustness. The newly developed digital CIM architecture addresses these limitations by combining the endurance and non-volatility of STT-MRAM with digitally controlled computation.

Graphene-based approach achieves robust and efficient spin-charge interconversion

Roni Peleg — Tue, 28 Oct 2025 12:18:35 +0200

Researchers from the Institut Català de Nanociència i Nanotecnologia (ICN2), CSIC and BIST have reported a theoretical framework and numerical confirmation for fully efficient spin-charge interconversion in graphene. Efficient conversion of charge current into spin current is a central objective in spintronics, and the intrinsic properties of graphene make it an attractive platform to explore this phenomenon.

Joaquín Medina Dueñas, Santiago Giménez de Castro, Jose H. Garcia, and Stephan Roche from ICN2 demonstrate that a complete conversion can be achieved by controlling the coupling between spin and pseudospin degrees of freedom. The study shows that a combined spin-pseudospin operator remains conserved in graphene, enabling fully efficient spin-charge conversion through the Rashba-Edelstein effect. The results also reveal the presence of a spin Hall effect that is resilient to disorder, indicating a stable mechanism for spin transport in realistic graphene systems.