Distinguishing artificial spin ice states using magnetoresistance effect for neuromorphic computing

Article Physics, Multidisciplinary

Artificial spin ice phase-change memory resistors

Francesco Caravelli et al.

Summary: This article presents a proposal for an electrical memory reminiscent of a memristor in connected Kagome artificial spin ice and simulates two scenarios to observe the memory behavior.

NEW JOURNAL OF PHYSICS (2022)

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Article Nanoscience & Nanotechnology

Reconfigurable training and reservoir computing in an artificial spin-vortex ice via spin-wave fingerprinting

Jack C. Gartside et al.

Summary: Strongly interacting artificial spin systems are versatile functional platforms with applications ranging from reconfigurable magnonics to neuromorphic computing. By tuning nanoarray dimensions, researchers have achieved multi-state artificial spin-vortex ice systems with potential for spin-wave computation and non-linear mapping transformations.

NATURE NANOTECHNOLOGY (2022)

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Article Physics, Multidisciplinary

Spectral fingerprinting: microstate readout via remanence ferromagnetic resonance in artificial spin ice

Alex Vanstone et al.

Summary: Artificial spin ices (ASIs) are magnetic metamaterials composed of geometrically tiled nanomagnets, which have significant physics and application potential. This study investigates the measurement of spin-wave responses under zero-field conditions and demonstrates its ability to provide a "spectral fingerprint" of the system microstate. This approach allows separate measurement of dipolar field strength, quenched disorder, and net magnetization, and enables rapid and scalable microstate readouts.

NEW JOURNAL OF PHYSICS (2022)

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Article Physics, Applied

Memristive Effects in Nanopatterned Permalloy Kagome Array

W. B. J. Fonseca et al.

Summary: In this study, we investigate the memristive effects in kagome nanopatterned permalloy. We discover the presence of a thermistor effect at low frequencies, which is caused by lithography and not found in similar experiments on thin films. An independent anisotropic magnetoresistive study confirms the existence of this effect, although a small hysteresis accounting for 1% of the effect is not attributable to the thermistor effect. By carefully subtracting nearby thermal hysteresis, the presence of this effect is further confirmed. A effective model is provided to describe the experimental results for the thermistor in the millihertz regime, showing a crossover from the millihertz to the gigahertz range, from a thermistor effect to a memristive effect for nanopatterned permalloy.

PHYSICAL REVIEW APPLIED (2022)

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Article Computer Science, Theory & Methods

KNOWM memristors in a bridge synapse delay-based reservoir computing system for detection of epileptic seizures

Dawid Przyczyna et al.

Summary: This study demonstrates the potential of nanodevices as computational substrates for non-linear transformation of electrical signals and memory in the context of epileptic seizure detection. By utilizing a single-node Echo State Machine (SNESM) based on bridge synapse, the system shows improved classification accuracy through the evolution of the signal in a feedback loop. The transformation in SNESM alters the correlation and distribution of complexity parameters in the input signal, ultimately leading to better classification scores.

INTERNATIONAL JOURNAL OF PARALLEL EMERGENT AND DISTRIBUTED SYSTEMS (2022)

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Article Physics, Applied

Enhancing computational performance of a spin-wave reservoir computer with input synchronization

Stuart Watt et al.

Summary: A spin-wave delay-line active-ring oscillator has been proposed as a suitable substrate for physical reservoir computing, displaying the required properties of fading memory and nonlinearity. By increasing the signal delay time, the improved system shows strong performance on both linear and nonlinear computing tasks. The extended delay time and other major improvements result in maximum capacities for both linear and nonlinear tasks.

JOURNAL OF APPLIED PHYSICS (2021)

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Article Multidisciplinary Sciences

Dynamic memristor-based reservoir computing for high-efficiency temporal signal processing

Yanan Zhong et al.

Summary: Zhong et al. developed a parallel memristor-based reservoir computing system capable of tuning critical parameters, achieving a classification accuracy of 99.6% in spoken-digit recognition and a time-series prediction error of 0.046 in the Henon map.

NATURE COMMUNICATIONS (2021)

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Article Multidisciplinary Sciences

A Hopf physical reservoir computer

Md Raf E. Ul Shougat et al.

Summary: Physical reservoir computing utilizes a physical system as a computational resource, with powerful computing capabilities, simple design, noise robustness, and high computational ability. The architecture, based on limit cycle oscillators modeling many physical systems, can be easily applied in various contexts.

SCIENTIFIC REPORTS (2021)

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Article Physics, Multidisciplinary

Switchable X-Ray Orbital Angular Momentum from an Artificial Spin Ice

Justin S. Woods et al.

Summary: Artificial spin ices with double edge dislocations can impart orbital angular momentum to scattered x rays, enabling selective probes of electronic and magnetic properties. The topological charge of the defect differs with respect to the structural and magnetic order, allowing for reconfigurable x-ray optics.

PHYSICAL REVIEW LETTERS (2021)

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Review Physics, Applied

Physical reservoir computing-an introductory perspective

Kohei Nakajima

JAPANESE JOURNAL OF APPLIED PHYSICS (2020)

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Article Physics, Multidisciplinary

Magnon Modes of Microstates and Microwave-Induced Avalanche in Kagome Artificial Spin Ice with Topological Defects

V. S. Bhat et al.

PHYSICAL REVIEW LETTERS (2020)

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Article Physics, Applied

Magnetization dynamics of nanoscale magnetic materials: A perspective

Anjan Barman et al.

JOURNAL OF APPLIED PHYSICS (2020)

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Article Multidisciplinary Sciences

Chirally coupled nanomagnets

Zhaochu Luo et al.

SCIENCE (2019)

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Article Materials Science, Multidisciplinary

Continuous magnetic phase transition in artificial square ice

Oles Sendetskyi et al.

PHYSICAL REVIEW B (2019)

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Article Engineering, Electrical & Electronic

Temporal data classification and forecasting using a memristor-based reservoir computing system

John Moon et al.

NATURE ELECTRONICS (2019)

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Article Materials Science, Multidisciplinary

Tunable magnetization dynamics in artificial spin ice via shape anisotropy modification

T. Dion et al.

PHYSICAL REVIEW B (2019)

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Article Nanoscience & Nanotechnology

Switchable geometric frustration in an artificial-spin-ice-superconductor heterosystem

Yong-Lei Wang et al.

NATURE NANOTECHNOLOGY (2018)

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Article Physics, Applied

Balanced Magnetic Logic Gates in a Kagome Spin Ice

P. Gypens et al.

PHYSICAL REVIEW APPLIED (2018)

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Article Physics, Applied

Macromagnetic Simulation for Reservoir Computing Utilizing Spin Dynamics in Magnetic Tunnel Junctions

Taishi Furuta et al.

PHYSICAL REVIEW APPLIED (2018)

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Article Physics, Applied

Brillouin light scattering study of magnetic-element normal modes in a square artificial spin ice geometry

Y. Li et al.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2017)

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Article Chemistry, Physical

Emergent dynamic chirality in a thermally driven artificial spin ratchet

Sebastian Gliga et al.

NATURE MATERIALS (2017)

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Article Multidisciplinary Sciences

Reservoir computing using dynamic memristors for temporal information processing

Chao Du et al.

NATURE COMMUNICATIONS (2017)

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Article Physics, Applied

Magnetotransport in Artificial Kagome Spin Ice

Gia-Wei Chern

PHYSICAL REVIEW APPLIED (2017)

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Article Materials Science, Multidisciplinary

Magnetic response of brickwork artificial spin ice

Jungsik Park et al.

PHYSICAL REVIEW B (2017)

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Article Physics, Applied

Spin injection into silicon detected by broadband ferromagnetic resonance spectroscopy

Ryo Ohshima et al.

APPLIED PHYSICS LETTERS (2017)

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Article Materials Science, Multidisciplinary

Vogel-Fulcher-Tammann freezing of a thermally fluctuating artificial spin ice probed by x-ray photon correlation spectroscopy

S. A. Morley et al.

PHYSICAL REVIEW B (2017)

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Article Materials Science, Multidisciplinary

Understanding magnetotransport signatures in networks of connected permalloy nanowires

B. L. Le et al.

PHYSICAL REVIEW B (2017)

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Article Multidisciplinary Sciences

Extensive degeneracy, Coulomb phase and magnetic monopoles in artificial square ice

Yann Perrin et al.

NATURE (2016)

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Article Multidisciplinary Sciences

Rewritable artificial magnetic charge ice

Yong-Lei Wang et al.

SCIENCE (2016)

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Ultrastructural Characterization of the Lower Motor System in a Mouse Model of Krabbe Disease

Valentina Cappello et al.

SCIENTIFIC REPORTS (2016)

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Article Materials Science, Multidisciplinary

Direct visualization of memory effects in artificial spin ice

Ian Gilbert et al.

PHYSICAL REVIEW B (2015)

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Article Multidisciplinary Sciences

Thermodynamic phase transitions in a frustrated magnetic metamaterial

L. Anghinolfi et al.

NATURE COMMUNICATIONS (2015)

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A Unified Framework for Reservoir Computing and Extreme Learning Machines based on a Single Time-delayed Neuron

S. Ortin et al.

SCIENTIFIC REPORTS (2015)

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Emergent ice rule and magnetic charge screening from vertex frustration in artificial spin ice

Ian Gilbert et al.

NATURE PHYSICS (2014)

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Review Physics, Multidisciplinary

Quantum spin ice: a search for gapless quantum spin liquids in pyrochlore magnets

M. J. P. Gingras et al.

REPORTS ON PROGRESS IN PHYSICS (2014)

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Crystallites of magnetic charges in artificial spin ice

Sheng Zhang et al.

NATURE (2013)

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Chiral nature of magnetic monopoles in artificial spin ice

N. Rougemaille et al.

NEW JOURNAL OF PHYSICS (2013)

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Unhappy vertices in artificial spin ice: new degeneracies from vertex frustration

Muir J. Morrison et al.

NEW JOURNAL OF PHYSICS (2013)

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Extended reciprocal space observation of artificial spin ice with x-ray resonant magnetic scattering

J. Perron et al.

PHYSICAL REVIEW B (2013)

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Emerging Chirality in Artificial Spin Ice

W. R. Branford et al.

SCIENCE (2012)

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Real-space observation of emergent magnetic monopoles and associated Dirac strings in artificial kagome spin ice

Elena Mengotti et al.

NATURE PHYSICS (2011)

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Reducing Disorder in Artificial Kagome Ice

Stephen A. Daunheimer et al.

PHYSICAL REVIEW LETTERS (2011)

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Information processing using a single dynamical node as complex system

L. Appeltant et al.

NATURE COMMUNICATIONS (2011)

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Direct observation of magnetic monopole defects in an artificial spin-ice system

S. Ladak et al.

NATURE PHYSICS (2010)

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Artificial 'spin ice' in a geometrically frustrated lattice of nanoscale ferromagnetic islands

RF Wang et al.

NATURE (2006)

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Influence of third elements on the anisotropic magnetoresistance in permalloy films

H Nagura et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2000)

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Distinguishing artificial spin ice states using magnetoresistance effect for neuromorphic computing

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