Terahertz Light Unlocks a New Era in Smarter, Faster Memory ChipsScientists from the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) and MIT have achieved a groundbreaking feat — creating a stable, long-lasting magnetic state in an antiferromagnetic material using only light. This discovery could lead to major advancements in memory chip technology and information processing.
By using a terahertz laser, which oscillates more than a trillion times per second, the researchers were able to directly excite the material’s atoms. They carefully tuned the laser’s frequency to match the natural vibrations of the atoms, triggering an ultrafast shift in the atomic structure and pushing the material into a new magnetic state. Their findings, recently published in Nature, highlight the potential of light to control magnetism in innovative ways.
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