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Field-Dependent Size and Shape of Single Magnetic Skyrmions

Niklas Romming, André Kubetzka, Christian Hanneken, Kirsten von Bergmann, and Roland Wiesendanger
Phys. Rev. Lett. 114, 177203 – Published 1 May 2015
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Abstract

The atomic-scale spin structure of individual isolated Skyrmions in an ultrathin film is investigated in real space by spin-polarized scanning tunneling microscopy. Their axial symmetry as well as their unique rotational sense is revealed by using both out-of-plane and in-plane sensitive tips. The size and shape of Skyrmions change as a function of the magnetic field. An analytical expression for the description of Skyrmions is proposed and applied to connect the experimental data to the original theoretical model describing chiral Skyrmions. Thereby, the relevant material parameters responsible for Skyrmion formation can be obtained.

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  • Received 16 January 2015

DOI:https://doi.org/10.1103/PhysRevLett.114.177203

© 2015 American Physical Society

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An Inside View of Magnetic Skyrmions

Published 1 May 2015

Atomic-scale imaging reveals the shape and size of a technologically interesting magnetic quasiparticle.

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Authors & Affiliations

Niklas Romming*, André Kubetzka, Christian Hanneken, Kirsten von Bergmann, and Roland Wiesendanger

  • Department of Physics, University of Hamburg, 20355 Hamburg, Germany

  • *nromming@physnet.uni-hamburg.de

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Issue

Vol. 114, Iss. 17 — 1 May 2015

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