Ballistic rectification of vortex domain wall chirality at nanowire corners

Omari, K.; Bradley, R. C.; Broomhall, T. J.; Hodges, M. P. P.; Hayward, T. J.; Rosamond, M. C.; Linfield, E. H.; Im, M. -Y.; Fischer, P.

doi:10.1063/1.4936565

Title: Ballistic rectification of vortex domain wall chirality at nanowire corners

Journal Article · Mon Nov 30 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4936565· OSTI ID:22486157

Omari, K.; Bradley, R. C.; Broomhall, T. J.; Hodges, M. P. P.; Hayward, T. J. ^[1]; Rosamond, M. C.; Linfield, E. H. ^[2]; Im, M. -Y. ^[3]; Fischer, P. ^[4]

Department of Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD (United Kingdom)
School of Electronic and Electrical Engineering, University of Leeds, Leeds LS2 9JT (United Kingdom)
Center for X-Ray Optics, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
Materials Sciences Division, Lawrence Berkley National Laboratory, Berkeley, California 94720 (United States)

The interactions of vortex domain walls with corners in planar magnetic nanowires are probed using magnetic soft X-ray transmission microscopy. We show that when the domain walls are propagated into sharp corners using applied magnetic fields above a critical value, their chiralities are rectified to either clockwise or anticlockwise circulation depending on whether the corners turn left or right. Single-shot focused magneto-optic Kerr effect measurements are then used to demonstrate how, when combined with modes of domain propagation that conserve vortex chirality, this allows us to dramatically reduce the stochasticity of domain pinning at artificial defect sites. Our results provide a tool for controlling domain wall chirality and pinning behavior both in further experimental studies and in future domain wall-based memory, logic and sensor technologies.

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OSTI ID:: 22486157

Journal Information:: Applied Physics Letters, Vol. 107, Issue 22; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951

Country of Publication:: United States

Language:: English

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Cited By (5)

Toward Chirality‐Encoded Domain Wall Logic Omari, Khalid A.; Broomhall, Thomas J.; Dawidek, Richard W. S. Advanced Functional Materials, Vol. 29, Issue 10 https://doi.org/10.1002/adfm.201807282	journal	March 2019
A Micromagnetic Protocol for Qualitatively Predicting Stochastic Domain Wall Pinning Omari, K. A.; Hayward, T. J. Scientific Reports, Vol. 7, Issue 1 https://doi.org/10.1038/s41598-017-17512-w	journal	December 2017
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Deterministic control of magnetic vortex wall chirality by electric field Beardsley, R. P.; Bowe, S.; Parkes, D. E. Scientific Reports, Vol. 7, Issue 1 https://doi.org/10.1038/s41598-017-07944-9	journal	August 2017

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71 CLASSICAL AND QUANTUM MECHANICS
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WALLS

Title: Ballistic rectification of vortex domain wall chirality at nanowire corners

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