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Polarization Selective Magnetic Vortex Dynamics and Core Reversal in Rotating Magnetic Fields

Michael Curcic, Bartel Van Waeyenberge, Arne Vansteenkiste, Markus Weigand, Vitalij Sackmann, Hermann Stoll, Manfred Fähnle, Tolek Tyliszczak, Georg Woltersdorf, Christian H. Back, and Gisela Schütz
Phys. Rev. Lett. 101, 197204 – Published 3 November 2008
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Abstract

We report on the observation of magnetic vortex dynamics in response to rotating magnetic fields in submicron platelets. Unlike linear fields or spin polarized currents, which excite both vortex core polarization states, an in-plane rotating field can selectively excite one of the polarization states. We demonstrate by direct imaging with time-resolved scanning x-ray microscopy that the rotating field only excites the gyrotropic mode if the rotation sense of the field coincides with the vortex gyration sense and that such a field can selectively reverse the vortex polarization.

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  • Received 1 June 2008

DOI:https://doi.org/10.1103/PhysRevLett.101.197204

©2008 American Physical Society

Authors & Affiliations

Michael Curcic1,*, Bartel Van Waeyenberge1,2,†, Arne Vansteenkiste2, Markus Weigand1, Vitalij Sackmann1, Hermann Stoll1,‡, Manfred Fähnle1, Tolek Tyliszczak3, Georg Woltersdorf4, Christian H. Back4, and Gisela Schütz1

  • 1Max-Planck-Institut für Metallforschung, 70569 Stuttgart, Germany
  • 2Department of Subatomic and Radiation Physics, Ghent University, 9000 Gent, Belgium
  • 3Advanced Light Source, LBNL, 94720 Berkeley, California, USA
  • 4Institut für Experimentelle und Angewandte Physik, Universität Regensburg, 93040 Regensburg, Germany

  • *curcic@mf.mpg.de
  • Bartel.VanWaeyenberge@UGent.be
  • stoll@mf.mpg.de

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Issue

Vol. 101, Iss. 19 — 7 November 2008

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