Cited 6 time in webofscience Cited 5 time in scopus

Sub-nanosecond signal propagation in anisotropy-engineered nanomagnetic logic chains

Title
Sub-nanosecond signal propagation in anisotropy-engineered nanomagnetic logic chains
Authors
Gu, Z[Gu, Zheng]Nowakowski, ME[Nowakowski, Mark E.]Carlton, DB[Carlton, David B.]Storz, R[Storz, Ralph]Im, MY[Im, Mi-Young]Hong, JM[Hong, Jeongmin]Chao, WL[Chao, Weilun]Lambson, B[Lambson, Brian]Bennett, P[Bennett, Patrick]Alam, MT[Alam, Mohmmad T.]Marcus, MA[Marcus, Matthew A.]Doran, A[Doran, Andrew]Young, A[Young, Anthony]Scholl, A[Scholl, Andreas]Fischer, P[Fischer, Peter]Bokor, J[Bokor, Jeffrey]
DGIST Authors
Im, MY[Im, Mi-Young]
Issue Date
2015-03
Citation
Nature Communications, 6
Type
Article
Article Type
Article
Keywords
AnisotropyBioengineeringElectron BeamElectron MicroscopyEngineeringMagnetMagnetic FieldMathematical ModelNanomagnetic LogicNanomaterialScanning Electron MicroscopySignalSignal ProcessingSimulationStatic ElectricityTemperatureTransmission Electron Microscopy
ISSN
2041-1723
Abstract
Energy efficient nanomagnetic logic (NML) computing architectures propagate binary information by relying on dipolar field coupling to reorient closely spaced nanoscale magnets. Signal propagation in nanomagnet chains has been previously characterized by static magnetic imaging experiments; however, the mechanisms that determine the final state and their reproducibility over millions of cycles in high-speed operation have yet to be experimentally investigated. Here we present a study of NML operation in a high-speed regime. We perform direct imaging of digital signal propagation in permalloy nanomagnet chains with varying degrees of shape-engineered biaxial anisotropy using full-field magnetic X-ray transmission microscopy and time-resolved photoemission electron microscopy after applying nanosecond magnetic field pulses. An intrinsic switching time of 100ps per magnet is observed. These experiments, and accompanying macrospin and micromagnetic simulations, reveal the underlying physics of NML architectures repetitively operated on nanosecond timescales and identify relevant engineering parameters to optimize performance and reliability. © 2015 Macmillan Publishers Limited. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2350
DOI
10.1038/ncomms7466
Publisher
Nature Publishing Group
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceETC1. Journal Articles


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