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Regensburg 2013 – scientific programme

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AGjDPG: Arbeitsgruppe junge DPG

AGjDPG 2: Topological Defects in Magnetic Materials: from Devices to Cosmos
(PhD-Student Symposium jointly with MA)

AGjDPG 2.1: Invited Talk

Tuesday, March 12, 2013, 09:30–10:00, H16

Skyrmions in magnets — •Maxim Mostovoy — Zernike Institute for Advanced Materials, University of Groningen, The Netherlands

Skyrmions form an important class of topological defects in uniformly ordered states. They emerge in a variety of different physical contexts and have rather unusual properties directly related to their non-trivial topology. First introduced by T. H. R. Skyrme in his unified theory of baryons and mesons, Skyrmions have made their way into condensed matter physics, e.g. as excitations in Quantum Hall ferromagnets and Bose-Einstein condensates. They have been recently observed in a number of helicoidal magnets with non-centrosymmetric crystal lattices, where they play the role of quantized fluxes of effective magnetic field acting on spin-polarized electrons. I will discuss phenomenological description of Skyrmions, microscopic mechanisms for their stabilization in magnetic materials and effects of the coupled dynamics of spins and charges at these topological objects.

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