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The layering of crystals in a lattice creates a magnetic nanoscale structure of electron-deflecting rotational orientations.
7:25 PM GMT, Saturday, December 5, 2020
Scientists have found a technique to monitor the scale of the resulting “quasi” magnetic particles, called skyrmion, for layering dissimilar crystals with atomic accuracy. For quantum information technology, this approach could advance high-density data storage and quantum magnets.
How Magnetic Skyrmion Particles Work
In standard ferromagnetics, the magnetic spins line up or down. But they curl and swirl in skyrmions, creating unique shapes like miniature porcupines. The tiny interconnected magnetic systems, where size matters and must be compact, could innovate high-density data storage.
Skyrmions developed as small as 10 nanometers, 10,000 times thinner than a human hair, the project led by Oak Ridge National Laboratory. “The way we design and synthesize the super lattice creates the atomic-scale magnetic interactions responsible for spin torsion,” said physicist Elizabeth Skoropata, who co-led the research with John Nichols, both formerly of ORNL.
Our discovery demonstrates how to reliably build interfaces for nanometer-sized skyrmions in quantum oxide heterostructures,”Our discovery demonstrates how to precisely design interfaces in quantum oxide heterostructures to create nanometer-sized skyrmions.”
In short, this is a big discovery that in the future could yield great effects.
Reference: Elizabeth Skoropata, John Nichols, Jong Mok Ok, Rajesh V. Chopdekar, Eun Sang Choi, Ankur Rastogi, Changhee Sohn, Xiang Gao, Sangmoon Yoon, Thomas Farmer, Ryan D. Desautels, Yongseong Choi, Daniel Haskel, John W. Freeland, Satoshi Okamoto, Matthew Brahlek and Reference: ‘Interfacial Tuning of Chiral Magnetic Interactions for Large Topological Hall Effects in LaMnO 3 / SrIrO 3 Heterostructures’