Swing Casting Boost for Confined Domain Wall Breathing

Matsushita, Katsuyoshi; Sasaki, Munetaka; Chawanya, Tsuyoshi

doi:10.7566/jpsj.83.013801

Cited by 1 publication

(2 citation statements)

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“…We use a numerical eigenmode method to study three TDW resonances, corresponding to translational 8,9,14,31 , twisting 11,32 and breathing 8,[33][34][35][36][37] excitations of the TDW. The latter mode has recently been studied for oscillator applications 38 and we demonstrate that this mode has the lowest sensitivity to changes in notch depths, making it an appealing choice for device applications. The eigenmode method we use also enables us to study the modes in the vicinity of the static depinning field where we find a sharp drop off in the translational mode frequency.…”

Section: Introductionmentioning

confidence: 79%

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Resonant translational, breathing, and twisting modes of transverse magnetic domain walls pinned at notches

et al. 2016

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We study translational, breathing and twisting resonant modes of transverse magnetic domain walls pinned at notches in ferromagnetic nanostrips. We demonstrate that a mode's sensitivity to notches depends strongly on the characteristics of that particular resonance. For example, the frequencies of modes involving lateral motion of the wall are the ones which are most sensitive to changes in the notch intrusion depth (especially at the narrower, more strongly confined end of the domain wall). In contrast, the breathing mode, whose dynamics are concentrated away from the notches is relatively insensitive to changes in the notches' sizes. We also demonstrate a sharp drop in the translational mode's frequency towards zero when approaching depinning which is found, using a harmonic oscillator model, to be consistent with a reduction in the local slope of the notch-induced confining potential at its edge.

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Section: Introductionmentioning

confidence: 79%

“…These results may be relevant when choosing which TDW mode to exploit in DW oscillators or when aiming to individually or simultaneously excite (multiple) DWs pinned at different positions within a strip (e.g. in shift registers) 1,38,55 . This is because certain modes (i.e.…”

Section: Discussionmentioning

confidence: 99%