Spintronics, or spin-electronics, is a revolutionary approach to information processing that utilizes the intrinsic angular momentum (spin) of electrons, rather than solely relying on electric charge flow. This technology promises faster, more energy-efficient data storage and logic devices. A central challenge in fully realizing spintronics has been the development of materials that can precisely control electron spin direction.
In a new development for spin-nanotechnology, researchers led by Professor Young Keun Kim of Korea University and Professor Ki Tae Nam of Seoul National University have successfully created magnetic nanohelices that can control electron spin.
This technology, which utilizes chiral magnetic materials to regulate electron spin at room temperature, has been published in Science.
"These nanohelices achieve spin polarization exceeding ~80%—just by their geometry and magnetism," stated Professor Young Keun Kim of Korea University, a co-corresponding author of the study.
He further emphasized, "This is a rare combination of structural chirality and intrinsic ferromagnetism, enabling spin filtering at room temperature without complex magnetic circuitry or cryogenics, and provides a new way to engineer electron behavior using structural design."
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