Tuning Magnetism with Voltage: A Breakthrough for Spintronic Neuromorphic Circuits Key Points: • Researchers have discovered a way to control magnetism in the quantum material lanthanum strontium manganite (LSMO) using applied voltage. • LSMO is magnetic and metallic at low temperatures but becomes non-magnetic and insulating when warmer. • The application of voltage creates distinct magnetic regions, challenging the conventional understanding that magnetism is not voltage-responsive. • The research was published in Nano Letters. Why It Matters This discovery could lead to energy-efficient control of magnetic properties, paving the way for spintronic neuromorphic circuits—electronic systems that mimic the brain’s information processing. What to Know • Quantum materials like LSMO exhibit unique properties governed by quantum mechanics. • By applying voltage, researchers found they could dynamically tune magnetism in different regions of the same material. • This approach differs from traditional methods that use magnetic fields to control magnetism. Insights & Implications • The ability to tune magnetism with voltage offers a new approach to low-power computing, especially in neuromorphic and spintronic devices. • The technique could enhance next-generation AI hardware, where energy-efficient, brain-like processing is essential. • This work represents a major step toward voltage-controlled spintronics, which could revolutionize memory storage, logic circuits, and AI-driven computing.
Latest Trends in Spintronics Research
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Summary
Spintronics, or spin-based electronics, is a cutting-edge field of research focusing on the use of electron spin, rather than charge, to process and store information. Innovations in this field, such as voltage-controlled magnetism, magnetic graphene, and advanced magnetic semiconductors, are paving the way for ultra-efficient, low-power computing systems that mimic brain-like processing and enable scalable quantum computing.
- Explore voltage-tuned magnetism: Discover how voltage, rather than traditional magnetic fields, can control magnetic properties, offering new possibilities for energy-efficient neuromorphic and spintronic devices.
- Consider graphene's potential: Learn how graphene, combined with certain materials, demonstrates exceptional spin transport at room temperature, unlocking opportunities for faster and cooler computing technologies.
- Dive into material innovation: Examine how incorporating higher concentrations of magnetic atoms into semiconductors can generate new materials for compact, powerful, and sustainable tech applications.
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⚛️ Graphene shows how spintronics can become practical! 🌟 Overview Graphene has long promised magical properties—but now it delivers. For the first time, scientists have demonstrated the quantum spin Hall (QSH) effect in magnetic graphene at zero magnetic field. By placing graphene next to an interlayer antiferromagnet (CrPS₄), researchers created a system that conducts spin without dissipation, even at room temperature. No magnets. No cooling tanks. Just pure quantum spin currents on a chip. 🤓 Geek mode Normally, QSH states require delicate tuning—external magnetic fields, ultra-pure materials, and cryogenic temperatures. But here’s the twist: CrPS₄ induces both spin–orbit coupling (SOC) and magnetic exchange in the graphene layer. These interactions open a topological bandgap while still preserving helical edge states—special quantum channels where electrons of opposite spin move in opposite directions. Even with broken time-reversal symmetry, the QSH effect survives. The team also measured a robust anomalous Hall effect up to 300K, confirming strong proximity-induced magnetism. 💼 Opportunity for VCs This unlocks a new class of topological spintronic devices—fast, robust, energy-efficient. 1️⃣Spin-based logic gates that don’t overheat. 2️⃣Room-temperature quantum interconnects. 3️⃣Low-power memory with zero crosstalk. Startups built on this could replace traditional charge-based electronics with coherent spin-based computation. The tech stack for magnetic graphene spintronics just got real—and it’s manufacturable with current 2D materials platforms. 🌍 Humanity-level impact We’re seeing the emergence of an era where spins, not charges, carry information. That shift has massive implications: No more heat dissipation bottlenecks. Orders-of-magnitude gains in speed and efficiency. Quantum behavior, at room temperature, in everyday devices. It’s essentially a working platform for quantum spin transport. 🤯 📄 Original study (Nature Communications, 2025): https://lnkd.in/gEWPtWyi #DeepTech #Spintronics #Graphene #QuantumMaterials #VentureCapital #RoomTemperatureQuantum
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Excited to share our latest paper, which reports the first all-antiferromagnetic tunnel junctions with both electrical switching and electrical readout of the antiferromagnetic state. We observed a large room-temperature tunneling magnetoresistance effect that is comparable in size to conventional ferromagnet-based tunnel junctions. The films are sputter-deposited on conventional silicon wafers and are compatible with established semiconductor manufacturing processes. Big thanks to all the team, including Mark Hersam, Nick Kioussis, Giovanni Finocchio, Matthew Grayson, Charudatta Phatak, and Vinod Sangwan for a great collaboration. Link to the paper: https://lnkd.in/gUYdu8mH Press release: https://lnkd.in/gAMapX6y #chips #microelectronics #spintronics #antiferromagnets #memory #MRAM #silicon #semiconductors #platinum
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🔬 UCLA researchers push spintronics forward with magnetic-semiconductor breakthrough A new method developed by UCLA’s California NanoSystems Institute allows semiconductors to incorporate up to 50% magnetic atoms, a tenfold increase over the traditional 5% threshold. This layered approach—stacking atomically thin semiconductor sheets with magnetic atoms—has enabled the creation of 20+ new materials combining elements like cobalt, manganese, and iron. These materials preserve the unique properties of superconductors and topological insulators while gaining new magnetic behaviors. Implications span multiple domains: ▪️ Spintronics: Potential for ultra-efficient, heat-free components in compact electronics ▪️ AI computing: Reduced energy and water consumption ▪️ Quantum computing: Possible new building blocks for scalable quantum architectures As traditional electronics hit physical limits, methods like this may redefine material platforms for next-gen computing. Thanks again to Evertiq - Global for the full article with more background and insights click the source link in the comments below. #Semiconductors #Spintronics #QuantumComputing #AI #UCLA #MaterialsScience #TechInnovation #R&D