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Cited 10 time in
Toward Chirality-Encoded Domain Wall Logic
- Toward Chirality-Encoded Domain Wall Logic
- Omari, Khalid A.; Broomhall, Thomas J.; Dawidek, Richard W. S.; Allwood, Dan A.; Bradley, Ruth C.; Wood, Jonathan M.; Fry, Paul W.; Rosamond, Mark C.; Linfield, Edmund H.; Im, Mi‐Young; Fischer, Peter J.; Hayward, Tom J.
- Issue Date
- Advanced Functional Materials, 29(10)
- Article Type
- Author Keywords
- chirality; domain walls; magnetic logic; nanomagnetism; spintronics
- Chirality; Computation theory; Computer circuits; Magnetic domains; Magnetization; Nanomagnetics; Nanowires; Network architecture; Spintronics; Spintronics; Textures; Computational architecture; Degree of fidelity; Encoded information; Ferromagnetic nanowire; Magnetic logic; Magnetization dynamics; Nanomagnetic logic; Nanomagnetisms; Domain walls
- Nonvolatile logic networks based on spintronic and nanomagnetic technologies have the potential to create high-speed, ultralow power computational architectures. This article explores the feasibility of “chirality-encoded domain wall logic,” a nanomagnetic logic architecture where data are encoded by the chiral structures of mobile domain walls in networks of ferromagnetic nanowires and processed by the chiral structures' interactions with geometric features of the networks. High-resolution magnetic imaging is used to test two critical functionalities: the inversion of domain wall chirality at tailored artificial defect sites (logical NOT gates) and the chirality-selective output of domain walls from 2-in-1-out nanowire junctions (common operation to AND/NAND/OR/NOR gates). The measurements demonstrate both operations can be performed to a good degree of fidelity even in the presence of complex magnetization dynamics that would normally be expected to destroy chirality-encoded information. Together, these results represent a strong indication of the feasibility of devices where chiral magnetization textures are used to directly carry, rather than merely delineate, data. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
- Wiley-VCH Verlag
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