Scientists have used light to visualize magnetic domains, and manipulated these regions using an electric field, in a quantum antiferromagnet. This method allows real-time observation of magnetic behaviors, paving the way for advancements in next-generation electronics and memory devices, as well as a deeper understanding of quantum materials.
When something draws us in like a magnet, we take a closer look. When magnets draw in physicists, they take a quantum look.
Antiferromagnets are magnetic materials in which magnetic forces, or spins, point in opposite directions, canceling each other out and resulting in no net magnetic field. Consequently, these materials neither have distinct north and south poles nor behave like traditional ferromagnets. Magnetic domains are small regions within magnetic materials where the spins of atoms align in the same direction. The boundaries between these domains are called domain walls.. They took advantage of nonreciprocal directional dichroism -- a phenomenon where the light absorption of a material changes upon the reversal of the direction of light or its magnetic moments.
"This optical microscopy method is straightforward and fast, potentially allowing real-time visualization of moving domain walls in the future," Kimura said.
Physics Materials Science Quantum Physics Spintronics Research Quantum Computers Computers And Internet Encryption
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