Search results for spintronics

Condensed Matter Sep 25, 2025

Ferrimagnet spin waves act like bosonic semiconductors, study finds

Ferrimagnets are a special type of magnet where different atoms' magnetic moments partially cancel each other out, creating a rich internal structure. They are widely used in technologies from magneto-optical devices to spin-based ...

Condensed Matter Sep 25, 2025

Shining a light on dark valleytronics: First direct observation of dark excitons in atomically thin materials

In a world-first, researchers from the Femtosecond Spectroscopy Unit at the Okinawa Institute of Science and Technology (OIST) have directly observed the evolution of the elusive dark excitons in atomically thin materials, ...

Optics & Photonics Sep 24, 2025

Spin may resolve century-old puzzle of light's momentum in matter

When you shine a flashlight into a glass of water, the beam bends. That simple observation, familiar since ancient times, hides one of the oldest puzzles in physics: what really happens to the momentum of light when it enters ...

Condensed Matter Sep 23, 2025

Engineers develop a magnetic transistor for more energy-efficient electronics

Transistors, the building blocks of modern electronics, are typically made of silicon. Because it's a semiconductor, this material can control the flow of electricity in a circuit. But silicon has fundamental physical limits ...

Condensed Matter Sep 23, 2025

Ultrafast magnetization switching: Moving boundary challenges previous all-optical switching models

The field of ultrafast magnetism explores how flashes of light can manipulate a material's magnetization in trillionths of a second. In the process called all-optical switching (AOS), a single laser pulse of several femtoseconds ...

Analytical Chemistry Sep 19, 2025

Chemists create light-switchable magnets that remain active for hours

A research team from the University of Chemistry and Technology, Prague (UCT Prague) and the Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences (IOCB Prague) has created and described a new type ...

Condensed Matter Sep 18, 2025

How you make it matters: Spintronics device performance tied to atomic interface changes

Spintronics devices will be key to realizing faster and more energy-efficient computers. To give us a better understanding of how to make them, a Kobe University team now showed how different manufacturing techniques influence ...

Condensed Matter Sep 17, 2025

Ultrathin films of ferromagnetic oxide reveal a hidden Hall effect mechanism

Researchers from Japan have discovered a unique Hall effect resulting from deflection of electrons due to "in-plane magnetization" of ferromagnetic oxide films (SrRuO3). Arising from the spontaneous coupling of spin-orbit ...

Condensed Matter Sep 10, 2025

Advanced X-ray technique enables first direct observation of magnon spin currents

Spintronics is an emerging field that leverages the spin, or the intrinsic angular momentum, of electrons. By harnessing this quantum-relativistic property, researchers aim to develop devices that store and transmit information ...

Condensed Matter Sep 9, 2025

Achieving low resistance and high performance in magnetic tunnel junctions using high-entropy oxides

A NIMS research team has developed a magnetic tunnel junction (MTJ) featuring a tunnel barrier made of a high-entropy oxide composed of multiple metallic elements. This MTJ simultaneously demonstrated stronger perpendicular ...

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