Spin-wave propagation in a microstructured magnonic crystal
Andrii V. Chumak,Philipp Pirro,Alexander A. Serga,Mikhail Kostylev,Robert Stamps,Helmut Schultheiss,K. Vogt,S. J. Hermsdoerfer,B. Laegel,P. A. Beck,Burkard Hillebrands +10 more
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TLDR
In this paper, the transmission of microwave spin waves through a microstructured magnonic crystal in the form of a Permalloy waveguide of a periodically varying width was studied experimentally and theoretically.Abstract:
Transmission of microwave spin waves through a microstructured magnonic crystal in the form of a Permalloy waveguide of a periodically varying width was studied experimentally and theoretically. The spin wave characteristics were measured by spatially resolved Brillouin light scattering microscopy. A rejection frequency band was clearly observed. The band gap frequency was controlled by the applied magnetic field. The measured spin-wave intensity as a function of frequency and propagation distance is in good agreement with a model calculation.read more
Citations
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The building blocks of magnonics
TL;DR: In this paper, a review of the functionalities of spinwave devices, concepts for spin-wave based computing and magnonic crystals is presented. But the focus of this review is on the control over the interplay between localization and delocalization of the spinwave modes using femtosecond lasers.
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The building blocks of magnonics
TL;DR: In this paper, a review of spin-wave properties and properties is presented, where the crucial parameters to realize free Bloch states and how, by contrast, a controlled localization might allow us to gradually turn on and manipulate spinwave interactions in spinwave based devices in the future.
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Review and prospects of magnonic crystals and devices with reprogrammable band structure
TL;DR: This topical review addresses materials with a periodic modulation of magnetic parameters that give rise to artificially tailored band structures and allow unprecedented control of spin waves in microand nanostructured ferromagnetic materials.
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Magnonic crystals for data processing
TL;DR: In this article, different approaches for the realization of static, reconfigurable, and dynamic magnonic crystals are presented along with a variety of novel wave phenomena discovered in these crystals.
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Micro-focused Brillouin light scattering: imaging spin waves at the nanoscale
TL;DR: The optical method of Brillouin light scattering (BLS) spectroscopy is a well established tool for the characterization of spin waves as discussed by the authors, which is the inelastic scattering of light from spin waves and confers several benefits: the ability to map the spin wave intensity distribution with high sensitivity as well as the potential to simultaneously measure the frequency and the wave vector and, therefore, the dispersion properties.
References
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Ferromagnetic resonance linewidth in metallic thin films: Comparison of measurement methods
Sangita S. Kalarickal,Pavol Krivosik,Mingzhong Wu,Carl E. Patton,Michael L. Schneider,Pavel Kabos,Thomas J. Silva,John P. Nibarger +7 more
TL;DR: In this paper, the linewidth of a series of Permalloy films with thicknesses of 50 and 100nm was measured using linear function of frequency, with a slope that corresponds to a nominal Landau-Lifshitz phenomenological damping parameter α value of 0.007 and zero frequency intercepts in the 160-320A∕m (2-4Oe) range.
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Observation of frequency band gaps in a one-dimensional nanostructured magnonic crystal
TL;DR: In this article, the experimental observation of band gaps in a synthetic nanostructured magnonic crystal composed of two different magnetic materials was reported, in the form of a one-dimensional periodic array comprising alternating Permalloy and cobalt nanostripes.
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Physical origin and generic control of magnonic band gaps of dipole-exchange spin waves in width-modulated nanostrip waveguides.
TL;DR: In this article, a planar structure of magnonic-crystal waveguides, made of a single magnetic material, was reported, in which the allowed and forbidden bands of propagating dipole-exchange spin waves can be manipulated by the periodic modulation of different widths in thin-film nanostrips.
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Excitation of microwaveguide modes by a stripe antenna
Vladislav E. Demidov,Mikhail Kostylev,Karsten Rott,Patryk Krzysteczko,Günter Reiss,Sergej O. Demokritov +5 more
TL;DR: In this article, the excitation of propagating spin-wave modes of a microscopic Permalloy-film waveguide by a stripe antenna was studied experimentally and it was shown that due to the strong quantization of the spinwave spectrum, the excitations of particular modes have essentially different frequency dependencies leading to a nonmonotonous variation of the modulation depth of the resulting spinwave beam as a function of excitation frequency.
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Plane-wave theory of three-dimensional magnonic crystals
TL;DR: In this paper, the authors used the plane-wave method to determine spin-wave spectra of three-dimensional magnonic crystals (the magnetic counterpart of photonic crystals) composed of two different ferromagnetic materials, and they demonstrated that magnonic gaps in such structures occur at spontaneous magnetization contrast and/or exchange contrast values above a certain critical level, depending on the lattice type.