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Bisig A, Akosa CA, Moon JH, et al. Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect. Phys Rev Lett. 2016;117(27):277203doi: 10.1103/PhysRevLett.117.277203.
Bisig, A., Akosa, C. A., Moon, J. H., Rhensius, J., Moutafis, C., von Bieren, A., Heidler, J., Kiliani, G., Kammerer, M., Curcic, M., Weigand, M., Tyliszczak, T., Van Waeyenberge, B., Stoll, H., Schütz, G., Lee, K. J., Manchon, A., & Kläui, M. (2016). Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect. Physical review letters, 117(27), 277203. https://doi.org/10.1103/PhysRevLett.117.277203
Bisig, André, et al. "Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect." Physical review letters vol. 117,27 (2016): 277203. doi: https://doi.org/10.1103/PhysRevLett.117.277203
Bisig A, Akosa CA, Moon JH, Rhensius J, Moutafis C, von Bieren A, Heidler J, Kiliani G, Kammerer M, Curcic M, Weigand M, Tyliszczak T, Van Waeyenberge B, Stoll H, Schütz G, Lee KJ, Manchon A, Kläui M. Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect. Phys Rev Lett. 2016 Dec 30;117(27):277203. doi: 10.1103/PhysRevLett.117.277203. Epub 2016 Dec 30. PMID: 28084754.
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Phys Rev Lett. 2016 Dec 30;117(27):277203. doi: 10.1103/PhysRevLett.117.277203. Epub 2016 Dec 30.

Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect.

Physical review letters

André Bisig, Collins Ashu Akosa, Jung-Hwan Moon, Jan Rhensius, Christoforos Moutafis, Arndt von Bieren, Jakoba Heidler, Gillian Kiliani, Matthias Kammerer, Michael Curcic, Markus Weigand, Tolek Tyliszczak, Bartel Van Waeyenberge, Hermann Stoll, Gisela Schütz, Kyung-Jin Lee, Aurelien Manchon, Mathias Kläui

Affiliations

  1. Department of Physics, University of Konstanz, 78457 Konstanz, Germany.
  2. Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany.
  3. Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
  4. Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.
  5. Institut of Physics, Johannes Gutenberg University Mainz, 55099 Mainz, Germany.
  6. King Abdullah University of Science and Technology (KAUST), Physical Science and Engineering Division, Thuwal 23955-6900, Saudi Arabia.
  7. Department of Materials Science and Engineering, Korea University, Seoul 136-713, Korea.
  8. Advanced Light Source, LBL, University of California, Berkeley, Berkeley, California 94720, USA.
  9. Department of Solid State Sciences, Ghent University, 9000 Ghent, Belgium.
  10. KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 136-713, Korea.

PMID: 28084754 DOI: 10.1103/PhysRevLett.117.277203

Abstract

We present a combined theoretical and experimental study, investigating the origin of the enhanced nonadiabaticity of magnetic vortex cores. Scanning transmission x-ray microscopy is used to image the vortex core gyration dynamically to measure the nonadiabaticity with high precision, including a high confidence upper bound. We show theoretically, that the large nonadiabaticity parameter observed experimentally can be explained by the presence of local spin currents arising from a texture induced emergent Hall effect. This study demonstrates that the magnetic damping α and nonadiabaticity parameter β are very sensitive to the topology of the magnetic textures, resulting in an enhanced ratio (β/α>1) in magnetic vortex cores or Skyrmions.

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