Nanowire spintronics for storage class memories and logic

Hrkac, G.; Dean, J.; Allwood, D. A.

doi:10.1098/rsta.2011.0138

Cited by 88 publications

(64 citation statements)

References 67 publications

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“…The study of MDW avalanches has become relevant in the field of memory devices [2][3][4], nanowires [5][6][7][8], and metal, alloy or semiconductor thin-films [9][10][11][12]. When ferromagnetic (or ferroelectric) thin-films with quenched disorder are placed in an external magnetic (or electric) field, a rich phenomenology is observed through the study of dynamic properties in the criticality [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Intrinsic anomalous scaling in a ferromagnetic thin film model

Torres

Buceta

2013

Eur. Phys. J. B

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Recently, the interest on theoretical and experimental studies of dynamic properties of the magnetic domain wall (MDW) of ferromagnetic thin films with disorder placed in an external magnetic field has increased. In order to study global and local measurable observables, we consider the (1 + 1)-dimensional model introduced by Buceta and Muraca [Physica A 390 (2011) 4192], based on rules of evolution that describe the MDW avalanches. From the values of the roughness exponents, global ζ, local ζ loc , and spectral ζ s , obtained from the global interface width, hight-difference correlation function and structure function, respectively, recent works have concluded that the universality classes should be analyzed in the context of the anomalous scaling theory. We show that the model is included in the group of systems with intrinsic anomalous scaling (ζ ≃ 1.5, ζ loc = ζ s ≃ 0.5), and that the surface of the MDW is multi-affine. With these results, we hope to establish in short term the scaling relations that verify the critical exponents of the model, including the dynamic exponent z, the exponents of the distributions of avalanche-size τ and -duration α, among others.

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Section: Introductionmentioning

confidence: 99%

Intrinsic anomalous scaling in a ferromagnetic thin film model

Torres

Buceta

2013

Eur. Phys. J. B

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“…As well as being the basis of the lateral version of the racetrack memory [48], networks of such nanowires have been shown to be capable of performing Boolean logic [59], albeit in an implementation driven by a magnetic field (a NOT gate based on current-induced motion has recently been demonstrated [60]). The field of nanowires and domain walls is reviewed here by Hrkac et al [61], who discuss memory, logic and more exotic applications such as nanowire-based cold atom circuits.…”

Section: Devices and System Architecturesmentioning

confidence: 99%

New directions in spintronics

Marrows

Hickey

2011

Phil. Trans. R. Soc. A.

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Conventional microelectronics exploits only the charge degree of freedom of the electron. Bringing the spin degree of freedom to bear on sensing, radio frequency, memory and logic applications opens up new possibilities for 'more than Moore' devices incorporating magnetic components that can couple to an external field, store a bit of data or represent a Boolean state. Moreover, the electron spin is an archetypal two-state quantum system that is an excellent candidate for a solid-state realization of a qubit.

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“…Low-dimensional structures such as graphene [1], nanowires [2], nanotubes [3], nanoribbons [4], silicene [5], and many more are expected to lead to useful spintronic applications, possibly leading to the production of extremely efficient magnetic sensors, high-capacity memory storage, and nonvolatile computer memories [6,7]. Important to spintronics is the mechanism of interaction between embedded impurities known as the indirect exchange interaction.…”

Section: Introductionmentioning

confidence: 99%

Strain-modified RKKY interaction in carbon nanotubes

et al. 2015

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For low-dimensional metallic structures, such as nanotubes, the exchange coupling between localized magnetic dopants is predicted to decay slowly with separation. The long-range character of this interaction plays a significant role in determining the magnetic order of the system. It has previously been shown that the interaction range depends on the conformation of the magnetic dopants in both graphene and nanotubes. Here we examine the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction in carbon nanotubes in the presence of uniaxial strain for a range of different impurity configurations. We show that strain is capable of amplifying or attenuating the RKKY interaction, significantly increasing certain interaction ranges, and acting as a switch: effectively turning on or off the interaction. We argue that uniaxial strain can be employed to significantly manipulate magnetic interactions in carbon nanotubes, allowing an interplay between mechanical and magnetic properties in future spintronic devices. We also examine the dimensional relationship between graphene and nanotubes with regards to the decay rate of the RKKY interaction.

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Nanowire spintronics for storage class memories and logic

Cited by 88 publications

References 67 publications

Intrinsic anomalous scaling in a ferromagnetic thin film model

Intrinsic anomalous scaling in a ferromagnetic thin film model

New directions in spintronics

Strain-modified RKKY interaction in carbon nanotubes

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