• Schmidt, D.
• Schubert, Eva
• Enders, A.
• Zhang, Rui
• Li, Zhen
• Kirby, Roger D.
• Sellmyer, D. J.
• Skomski, Ralph
• Hofmann, T.

Abstract

<jats:p>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.</jats:p>

Topics

• impedance spectroscopy
• phase
• semiconductor
• magnetic domain wall