期刊
JOURNAL OF APPLIED PHYSICS
卷 111, 期 7, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3672079
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资金
- NSF-MRSEC [NSF-DMR-0820521]
- NCMN
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [846329] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0922937] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0747704] Funding Source: National Science Foundation
Magnetic skyrmions and other topologically protected nanostructures are investigated. Since skyrmions are mathematical rather than physical objects, they describe a wide variety of physical systems, from simple magnetic domain walls to complicated quantum phases with long-range many-body entanglement. Important distinctions concern the skyrmions' relativistic character, their quantum-mechanical or classical nature, and the one-or many-body character of the wave functions. As specific examples we consider magnetic nanospirals, where the topology of a vortex-like spin state is protected by magnetostatic interactions, and edge currents in dilute magnetic semiconductors and metallic nanodots. Our analysis militates against giant orbital moments created by a mesocopically enhanced spin-orbit coupling. (C) 2012 American Institute of Physics. [doi:10.1063/1.3672079]
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