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Spin Loss Repurposed to Drive Low-Power Magnet Switching

The work appears in Nature Communications, suggesting simpler, process-ready devices.

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Overview

  • KIST, DGIST, and Yonsei researchers report a device principle that uses magnonic spin dissipation as an active driver of magnetization control.
  • The team observes spontaneous reversal of magnetization in ferromagnets without external stimuli, enabled by dissipating spin as magnons.
  • Experiments show that greater spin loss lowers the switching power requirement, delivering up to about threefold energy-efficiency gains versus conventional methods.
  • The approach requires no exotic materials and employs a straightforward structure described as compatible with standard semiconductor processes.
  • Potential applications include AI semiconductors, ultra-low-power memory, neuromorphic computing, and edge devices, though commercial deployment still needs further engineering and validation.