New Logic Synthesis as Nanotechnology Enabler

Amarù, Luca; Gaillardon, Pierre-Emmanuel; Mitra, Subhasish; Micheli, Giovanni De

doi:10.1109/jproc.2015.2460377

Cited by 58 publications

(23 citation statements)

References 137 publications

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“…In this work, the application of the phase-to-intensity conversion by parallel pumping to a magnonic majority gate [105][106][107] has been studied numerically by micromagnetic simulations using MuMax3 [108]. A majority gate [109,110] is a logic element with an odd number of inputs whose output represents the majority of the input values. It can act as the basic element of novel logic architectures.…”

Section: Phase-to-intensity Conversionmentioning

confidence: 99%

Parallel pumping for magnon spintronics: Amplification and manipulation of magnon spin currents on the micron-scale

2017

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Magnonics and magnon spintronics aim at the utilization of spin waves and magnons, their quanta, for the construction of wave-based logic networks via the generation of pure all-magnon spin currents and their interfacing with electrical charge transport. The promise of efficient parallel data processing and low power consumption renders this field one of the most promising research areas in spintronics. In this context, the process of parallel parametric amplification, i.e., the conversion of microwave photons into magnons at one half of the microwave frequency, has proven to be a versatile tool to excite and to manipulate spin waves. Its beneficial and unique properties such as frequency and mode-selectivity, the possibility to excite spin waves in a wide wavevector range and the creation of phase-correlated wave pairs, have enabled the achievement of important milestones like the magnon Bose Einstein condensation and the cloning and trapping of spinwave packets. Parallel parametric amplification, which allows for the selective amplification of magnons while conserving their phase is, thus, one of the key methods of spin-wave generation and amplification.The application of parallel parametric amplification to CMOS-compatible micro-and nanostructures is an important step towards the realization of magnonic networks. This is motivated not only by the fact that amplifiers are an important tool for the construction of any extended logic network but also by the unique properties of parallel parametric amplification. In particular, the creation of phase-correlated wave pairs allows for rewarding alternative logic operations such as a phase-dependent amplification of the incident waves. Recently, the successful application of parallel parametric amplification to metallic microstructures has been reported which constitutes an important milestone for the application of magnonics in practical devices. It has been demonstrated that parametric amplification provides an excellent tool to generate and to amplify spin waves in these systems in a wide wavevector range. In particular, the amplification greatly benefits from the discreteness of the spin-wave spectra since the size of the microstructures is comparable to the spin-wave wavelength. This opens up new, interesting routes of spin-wave amplification and manipulation. In this Review, we will give an overview over the recent developments and achievements in this field.

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Section: Phase-to-intensity Conversionmentioning

confidence: 99%

Parallel pumping for magnon spintronics: Amplification and manipulation of magnon spin currents on the micron-scale

2017

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“…3) EPFL Benchmarks: The EPFL combinational benchmark suite has been introduced at the IWLS workshop in 2015 [3]. It consists of 23 combinational circuits designed to challenge modern logic optimization tools.…”

Section: Background and Motivationmentioning

confidence: 99%

Multi-level logic benchmarks: An exactness study

Amarù

Soeken

Haaswijk

et al. 2017

2017 22nd Asia and South Pacific Design Automation Conference (ASP-DAC)

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Abstract-In this paper, we study exact multi-level logic benchmarks. We refer to an exact logic benchmark, or exact benchmark in short, as the optimal implementation of a given Boolean function, in terms of minimum number of logic levels and/or nodes. Exact benchmarks are of paramount importance to design automation because they allow engineers to test the efficiency of heuristic techniques used in practice. When dealing with two-level logic circuits, tools to generate exact benchmarks are available, e.g., espresso-exact, and scale up to relatively large size. However, when moving to modern multi-level logic circuits, the problem of deriving exact benchmarks is inherently more complex. Indeed, few solutions are known. In this paper, we present a scalable method to generate exact multi-level benchmarks with the optimum, or provably close to the optimum, number of logic levels. Our technique involves concepts from graph theory and joint support decomposition. Experimental results show an asymptotic exponential gap between state-ofthe-art synthesis techniques and our exact results. Our findings underline the need for strong new research in logic synthesis.

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“…Magnonics, alongside spintronics, opens the possibility to design devices even smaller, faster and more energetically efficient than electronic ones [1][2][3]. This concerns signal generation, transmission, amplification and manipulation as well as data storage [4][5][6][7].…”

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confidence: 99%

Broadband magnetoelastic coupling in magnonic-phononic crystals for high-frequency nanoscale spin-wave generation

2017

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Spin waves are promising candidates for information carriers in advanced technology. The interactions between spin waves and acoustic waves in magnetic nanostructures are of much interest because of their potential application for spin wave generation, amplification and transduction. We investigate numerically the dynamics of magnetoelastic excitations in a one-dimensional magphonic crystal consisting of alternating layers of permalloy and cobalt. We use the plane wave method and the finite element method for frequency-and time-domain simulations, respectively. The studied structure is optimized for hybridization of specific spin-wave and acoustic dispersion branches in the entire Brillouin zone in a broad frequency range. We show that this type of periodic structure can be used for efficient generation of high-frequency spin waves.

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New Logic Synthesis as Nanotechnology Enabler

Abstract: This paper investigates the relation between logic synthesis and emerging nanotechnologies, and shows how new logic synthesis techniques can enable the identification of the full potential of a given nanotechnology.

Cited by 58 publications

References 137 publications

Parallel pumping for magnon spintronics: Amplification and manipulation of magnon spin currents on the micron-scale

Parallel pumping for magnon spintronics: Amplification and manipulation of magnon spin currents on the micron-scale

Multi-level logic benchmarks: An exactness study

Broadband magnetoelastic coupling in magnonic-phononic crystals for high-frequency nanoscale spin-wave generation

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