[Figure 1] Schematic of magnetization control technology using 'spin loss' (IMAGE)

National Research Council of Science & Technology

[Figure 1] Schematic of magnetization control technology using 'spin loss'

Caption

(Left) A conventional structure that runs a current through the outside of a magnet to generate spins and drive them into the magnet. Some of the spins leak out as they travel, and this spin loss reduces the efficiency of reorienting the magnet.(Right) The new method proposed in this study is designed to flow current directly into the magnetic material, causing spin to escape in one direction. The spin that escapes acts on the magnetic material as if it were coming in from the opposite direction, creating a self-reorienting effect. The greater the amount of spin lost, the greater the force exerted on the magnet, making it easier to change the magnetization.

Credit

Korea Institute of Science and Technology(KIST)

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