Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect

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

doi:10.1103/PhysRevLett.117.277203

Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

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.

Original language	English
Article number	277203
Journal	Physical review letters
Volume	117
Issue number	27
DOIs	https://doi.org/10.1103/PhysRevLett.117.277203
Publication status	Published - 2016 Dec 30

Bibliographical note

Funding Information:
The authors acknowledge support by the German Science Foundation Grants No.DFG SFB 767, SFB TRR 173 Spin+X, KL1811, MAINZ GSC 266, the ERC No.MASPIC 2007-Stg 208162, the EU RTN Spinswitch, No.MRTN CT-2006-035327, No.MAGWIRE FP7-ICT-2009-5 257707, COMATT and the Swiss National Science Foundation. We also thank Michael Bechtel and the BESSY II staff for supporting the time-resolved studies at the HZB Berlin. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, and of the U.S. Department of Energy under Contract No.DE-AC02-05CH11231. A.M. and C.A. are supported by the King Abdullah University of Science and Technology (KAUST) through Grant No.CRG2-R2-13-MANC-KAUST-1 from the Office of Sponsored Research (OSR).

Publisher Copyright:
© 2016 American Physical Society.

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.117.277203

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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), Article 277203. 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 2016, 'Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect', Physical review letters, vol. 117, no. 27, 277203. https://doi.org/10.1103/PhysRevLett.117.277203

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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.",

author = "Andr{\'e} Bisig and Akosa, {Collins Ashu} and Moon, {Jung Hwan} and Jan Rhensius and Christoforos Moutafis and {Von Bieren}, Arndt and Jakoba Heidler and Gillian Kiliani and Matthias Kammerer and Michael Curcic and Markus Weigand and Tolek Tyliszczak and {Van Waeyenberge}, Bartel and Hermann Stoll and Gisela Sch{\"u}tz and Lee, {Kyung Jin} and Aurelien Manchon and Mathias Kl{\"a}ui",

note = "Funding Information: The authors acknowledge support by the German Science Foundation Grants No.DFG SFB 767, SFB TRR 173 Spin+X, KL1811, MAINZ GSC 266, the ERC No.MASPIC 2007-Stg 208162, the EU RTN Spinswitch, No.MRTN CT-2006-035327, No.MAGWIRE FP7-ICT-2009-5 257707, COMATT and the Swiss National Science Foundation. We also thank Michael Bechtel and the BESSY II staff for supporting the time-resolved studies at the HZB Berlin. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, and of the U.S. Department of Energy under Contract No.DE-AC02-05CH11231. A.M. and C.A. are supported by the King Abdullah University of Science and Technology (KAUST) through Grant No.CRG2-R2-13-MANC-KAUST-1 from the Office of Sponsored Research (OSR). Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

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AU - Moutafis, Christoforos

AU - Von Bieren, Arndt

AU - Heidler, Jakoba

AU - Kiliani, Gillian

AU - Kammerer, Matthias

AU - Curcic, Michael

AU - Weigand, Markus

AU - Tyliszczak, Tolek

AU - Van Waeyenberge, Bartel

AU - Stoll, Hermann

AU - Schütz, Gisela

AU - Lee, Kyung Jin

AU - Manchon, Aurelien

AU - Kläui, Mathias

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Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect

Abstract

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