Spin-Wave Interference in Microscopic Rings

Podbielski, Jan; Giesen, F.; Grundler, D.

doi:10.1103/physrevlett.96.167207

Cited by 134 publications

(87 citation statements)

References 32 publications

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“…Transmission spectra are measured at room temperature by means of a broadband ferromagnetic resonance setup using a vector-network analyzer [18]. The coplanar waveguide is contacted via GSG (Ground-Signal-Ground) probes.…”

Section: Sample Preparation and Experimental Methodsmentioning

confidence: 99%

Finite Size Effect on Spread of Resonance Frequencies in Arrays of Coupled Vortices

Vogel

Drews²,

et al. 2011

IEEE Trans. Magn.

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Dynamical properties of magnetic vortices in arrays of magnetostatically coupled ferromagnetic disks are studied by means of a broadband ferromagnetic-resonance (FMR) setup. Magnetic force microscopy and magnetic transmission soft X-ray microscopy are used to image the core polarizations and the chiralities which are both found to be randomly distributed. The resonance frequency of vortex-core motion strongly depends on the magnetostatic coupling between the disks. The parameter describing the relative broadening of the absorption peak observed in the FMR transmission spectra for a given normalized center-to-center distance between the elements is shown to depend on the size of the array.

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Section: Sample Preparation and Experimental Methodsmentioning

confidence: 99%

Finite Size Effect on Spread of Resonance Frequencies in Arrays of Coupled Vortices

Vogel

Drews²,

et al. 2011

IEEE Trans. Magn.

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“…Magnonic devices 5 aim to use the information carried by SWs to perform their respective designated tasks. Waveguides, 6 SW interferometers, [7][8][9] phase shifters, 10 and magnonic crystals (MCs) 3,[11][12][13] are some of the important components of magnonic devices. Knowledge of spin-wave dispersion within such structures is necessary for their design and operation.…”

Section: Magnonicsmentioning

confidence: 99%

Effect of hole shape on spin-wave band structure in one-dimensional magnonic antidot waveguide

Kumar¹,

Sabareesan²,

Wang³

et al. 2013

Journal of Applied Physics

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We present the possibility of tuning the spin-wave band structure, particularly the bandgaps in a nanoscale magnonic antidot waveguide by varying the shape of the antidots. The effects of changing the shape of the antidots on the spin-wave dispersion relation in a waveguide have been carefully monitored. We interpret the observed variations by analysing the equilibrium magnetic configuration and the magnonic power and phase distribution profiles during spin-wave dynamics. The inhomogeneity in the exchange fields at the antidot boundaries within the waveguide is found to play a crucial role in controlling the band structure at the discussed length scales. The observations recorded here will be important for future developments of magnetic antidot based magnonic crystals and waveguides. V C 2013 AIP Publishing LLC. [http://dx

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“…the amplitude and phase 3 (the latter is frequency-and wavenumber-dependent) of spin waves, and many available intrinsic attributes specific to waves [17][18][19][20] such as interference. 17,18 Spin-wave-based devices 3-7 also possess some advantages over light-wave-based ones as far as the microwave-frequency band of signals is concerned, e.g., the wavelength of spin waves is generally much smaller than that of light waves at the same frequency, 21 and the characteristics of spin waves are easier to manipulate by an external object, e.g. magnetic field 22 or electric current.…”

Section: Introductionmentioning

confidence: 99%

Engineering spin-wave channels in submicrometer magnonic waveguides

Xing

Wang

2013

AIP Advances

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Based on micromagnetic simulations and model calculations, we demonstrate that degenerate well and barrier magnon modes can exist concurrently in a single magnetic waveguide magnetized perpendicularly to the long axis in a broad frequency band, corresponding to copropagating edge and centre spin waves, respectively. The dispersion relations of these magnon modes clearly show that the edge and centre modes possess much different wave characteristics. By tailoring the antenna size, the edge mode can be selectively activated. If the antenna is sufficiently narrow, both the edge and centre modes are excited with considerable efficiency and propagate along the waveguide. By roughening the lateral boundary of the waveguide, the characteristics of the relevant channel can be easily engineered. Moreover, the coupling of the edge and centre modes can be conveniently controlled by scaling the width of the waveguide. For a wide waveguide with a narrow antenna, the edge and centre modes travel relatively independently in spatially-separate channels, whereas for a narrow strip, these modes strongly superpose in space. These discoveries might find potential applications in emerging magnonic devices

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Spin-Wave Interference in Microscopic Rings

Cited by 134 publications

References 32 publications

Finite Size Effect on Spread of Resonance Frequencies in Arrays of Coupled Vortices

Finite Size Effect on Spread of Resonance Frequencies in Arrays of Coupled Vortices

Effect of hole shape on spin-wave band structure in one-dimensional magnonic antidot waveguide

Engineering spin-wave channels in submicrometer magnonic waveguides

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