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

Nano Engineering and Spintronic Technologies

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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 - 30 Dec 2016

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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

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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",

year = "2016",

month = dec,

day = "30",

doi = "10.1103/PhysRevLett.117.277203",

language = "English",

volume = "117",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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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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T1 - Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect

AU - Bisig, André

AU - Akosa, Collins Ashu

AU - Moon, Jung Hwan

AU - Rhensius, Jan

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

PY - 2016/12/30

Y1 - 2016/12/30

N2 - 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.

AB - 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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U2 - 10.1103/PhysRevLett.117.277203

DO - 10.1103/PhysRevLett.117.277203

M3 - Article

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SN - 0031-9007

VL - 117

JO - Physical Review Letters

JF - Physical Review Letters

IS - 27

M1 - 277203

ER -

Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect

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