2004
DOI: 10.1063/1.1790606
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Incoherent magnetization rotation observed in subnanosecond time-resolving x-ray photoemission electron microscopy

Abstract: We present recent results of time-resolved x-ray photoemission electron microscopy on permalloy microstructures. The stroboscopic experiments feature a time-resolution of ⌬ ഛ 130 ps. We observe a strong influence of incoherent magnetization rotation processes, leading to a significant transient stray-field formation at the edges of the microstructure.

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Cited by 49 publications
(29 citation statements)
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“…This phenomenon occurs for a Landau flux-closure structure excited slightly off resonance. We show that the induced perpendicular moment, which leads to a domain wall shift despite zero local torque, is caused by a self-trapping of an oscillating mode, thus maximizing the energy exhausted off the exciting field.The time dependent spatial distribution of the magnetization was measured using a photoemission electron microscope (PEEM) [10]. The PEEM measures the spatial distribution of the x-ray absorption via the electron yield of secondary electrons [11].…”
mentioning
confidence: 99%
“…This phenomenon occurs for a Landau flux-closure structure excited slightly off resonance. We show that the induced perpendicular moment, which leads to a domain wall shift despite zero local torque, is caused by a self-trapping of an oscillating mode, thus maximizing the energy exhausted off the exciting field.The time dependent spatial distribution of the magnetization was measured using a photoemission electron microscope (PEEM) [10]. The PEEM measures the spatial distribution of the x-ray absorption via the electron yield of secondary electrons [11].…”
mentioning
confidence: 99%
“…Via the x-ray magnetic circular dichroism even magnetic vortices can be resolved with time-resolved scanning x-ray microscopy [11][12][13] or time-resolved photoemission electron microscopy. [14][15][16][17] The drawback of these two methods is the availability of beam time and the limited precision in frequency. Electrical detection methods on single elements fill the gap between ensemble transport spectroscopy and microscopic measurements on single elements.…”
Section: Introductionmentioning
confidence: 99%
“…This approach, however, lacks the framework to study the intricate details of the micromagnetic configuration during the switching process. Extensive studies have been conducted to examine the effects of incoherent magnetization rotation under magnetic fields [19][20][21][22] or spin transfer torque [23][24][25][26][27][28][29][30]. However, incoherent magnetization rotation in shape anisotropic nanomagnets subjected to stress is yet to be rigorously addressed and analyzed.…”
Section: Introductionmentioning
confidence: 99%