title: Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect.
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.
authors.affiliation: Department of Physics, University of Konstanz, 78457 Konstanz, Germany.|Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany.|Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.|Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.|Institut of Physics, Johannes Gutenberg University Mainz, 55099 Mainz, Germany.
authors.forename: André
authors.initials: A
authors.lastname: Bisig
authors.affiliation: King Abdullah University of Science and Technology (KAUST), Physical Science and Engineering Division, Thuwal 23955-6900, Saudi Arabia.
authors.forename: Collins Ashu
authors.initials: CA
authors.lastname: Akosa
authors.affiliation: Department of Materials Science and Engineering, Korea University, Seoul 136-713, Korea.
authors.forename: Jung-Hwan
authors.initials: JH
authors.lastname: Moon
authors.affiliation: Department of Physics, University of Konstanz, 78457 Konstanz, Germany.|Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.
authors.forename: Jan
authors.initials: J
authors.lastname: Rhensius
authors.affiliation: Department of Physics, University of Konstanz, 78457 Konstanz, Germany.|Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.|Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.
authors.forename: Christoforos
authors.initials: C
authors.lastname: Moutafis
authors.affiliation: Department of Physics, University of Konstanz, 78457 Konstanz, Germany.|Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.|Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.
authors.forename: Arndt
authors.initials: A
authors.lastname: von Bieren
authors.affiliation: Department of Physics, University of Konstanz, 78457 Konstanz, Germany.|Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.|Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.
authors.forename: Jakoba
authors.initials: J
authors.lastname: Heidler
authors.affiliation: Department of Physics, University of Konstanz, 78457 Konstanz, Germany.
authors.forename: Gillian
authors.initials: G
authors.lastname: Kiliani
authors.affiliation: Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany.
authors.forename: Matthias
authors.initials: M
authors.lastname: Kammerer
authors.affiliation: Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Curcic
authors.affiliation: Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany.
authors.forename: Markus
authors.initials: M
authors.lastname: Weigand
authors.affiliation: Advanced Light Source, LBL, University of California, Berkeley, Berkeley, California 94720, USA.
authors.forename: Tolek
authors.initials: T
authors.lastname: Tyliszczak
authors.affiliation: Department of Solid State Sciences, Ghent University, 9000 Ghent, Belgium.
authors.forename: Bartel
authors.initials: B
authors.lastname: Van Waeyenberge
authors.affiliation: Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany.
authors.forename: Hermann
authors.initials: H
authors.lastname: Stoll
authors.affiliation: Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany.
authors.forename: Gisela
authors.initials: G
authors.lastname: Schütz
authors.affiliation: Department of Materials Science and Engineering, Korea University, Seoul 136-713, Korea.|KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 136-713, Korea.
authors.forename: Kyung-Jin
authors.initials: KJ
authors.lastname: Lee
authors.affiliation: King Abdullah University of Science and Technology (KAUST), Physical Science and Engineering Division, Thuwal 23955-6900, Saudi Arabia.
authors.forename: Aurelien
authors.initials: A
authors.lastname: Manchon
authors.affiliation: Department of Physics, University of Konstanz, 78457 Konstanz, Germany.|Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.|Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.|Institut of Physics, Johannes Gutenberg University Mainz, 55099 Mainz, Germany.
authors.forename: Mathias
authors.initials: M
authors.lastname: Kläui