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Skyrmions in magnetic multilayers: chirality, electrical detection and current-induced motion
Author(s): Nicolas Reyren; Karim Bouzehouane; Jean-Yves Chauleau; Sophie Collin; Albert Fert; Simone Finizio; Karin Garcia; Sean Hughes; Nicolas Jaouen; William Legrand; Davide Maccariello; Samuel McFadzean; Stephen McVitie; Christoforos Moutafis; Horia Popescu; Jörg Raabe; C. A. F. Vaz; Vincent Cros
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Paper Abstract

Sub-100-nm skyrmions are stabilized in magnetic metallic multilayers and observed using transmission electron microscopy, magnetic force microscopy, scanning transmission X-ray microscopy and X-ray resonant magnetic scattering. All these advanced imaging techniques demonstrate the presence of 'pure' Neel skyrmion textures with a determined chirality. Combining these observations with electrical measurements allows us to demonstrate reproducible skyrmion nucleation using current pulses, and measure their contribution to the transverse resistivity to detect them electrically. Once nucleated, skyrmions can be moved using charge currents. We find predominantly a creep-like regime, characterized by disordered skyrmion motion, as observed by atomic force microscopy and scanning transmission X-ray microscopy. These observations are explained qualitatively and to some extent quantitatively by the presence of crystalline grains of about 20nm lateral size with a distribution of magnetic properties.

Paper Details

Date Published: 6 September 2017
PDF: 9 pages
Proc. SPIE 10357, Spintronics X, 1035724 (6 September 2017); doi: 10.1117/12.2275058
Show Author Affiliations
Nicolas Reyren, CNRS, Thales, Univ. Paris-Sud, Univ. Paris-Saclay (France)
Karim Bouzehouane, CNRS, Thales, Univ. Paris-Sud, Univ. Paris-Saclay (France)
Jean-Yves Chauleau, CNRS, Thales, Univ. Paris-Sud, Univ. Paris-Saclay (France)
Synchrotron SOLEIL (France)
Sophie Collin, CNRS, Thales, Univ. Paris-Sud, Univ. Paris-Saclay (France)
Albert Fert, CNRS, Thales, Univ. Paris-Sud, Univ. Paris-Saclay (France)
Simone Finizio, Paul Scherrer Institut (Switzerland)
Karin Garcia, CNRS, Thales, Univ. Paris-Sud, Univ. Paris-Saclay (France)
Sean Hughes, Univ. of Glasgow (United Kingdom)
Nicolas Jaouen, Synchrotron SOLEIL (France)
William Legrand, CNRS, Thales, Univ. Paris-Sud, Univ. Paris-Saclay (France)
Davide Maccariello, CNRS, Thales, Univ. Paris-Sud, Univ. Paris-Saclay (France)
Samuel McFadzean, Univ. of Glasgow (United Kingdom)
Stephen McVitie, Univ. of Glasgow (United Kingdom)
Christoforos Moutafis, The Univ. of Manchester (United Kingdom)
Horia Popescu, Synchrotron SOLEIL (France)
Jörg Raabe, Paul Scherrer Institut (Switzerland)
C. A. F. Vaz, Paul Scherrer Institut (Switzerland)
Vincent Cros, CNRS, Thales, Univ. Paris-Sud, Univ. Paris-Saclay (France)


Published in SPIE Proceedings Vol. 10357:
Spintronics X
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi; Henri Jaffrès, Editor(s)

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