2015
DOI: 10.1103/physrevb.92.144428
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Quantitative analysis of shadow x-ray magnetic circular dichroism photoemission electron microscopy

Abstract: Shadow X-ray Magnetic Circular Dichroism Photo-Emission Electron Microscopy (XMCD-PEEM) is a recent technique, in which the photon intensity in the shadow of an object lying on a surface, may be used to gather information about the three-dimensional magnetization texture inside the object. Our purpose here is to lay the basis of a quantitative analysis of this technique. We first discuss the principle and implementation of a method to simulate the contrast expected from an arbitrary micromagnetic state. Text b… Show more

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Cited by 30 publications
(39 citation statements)
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“…DWs were monitored with both magnetic force microscopy (MFM) and X-ray Magnetic Circular Dichroism Photo-Emission Electron Microscopy (XMCD-PEEM) in the shadow mode ( Fig. 1c) to reveal the three-dimensional texture of magnetization [16,30,31]. While in MFM, sharp ns-long pulses could be sent, in XMCD-PEEM the shape of current pulses was distorted to a minimum width of 10 − 15 ns, due to long cabling, UHV feedthroughs and the sample holder contacts.…”
mentioning
confidence: 99%
“…DWs were monitored with both magnetic force microscopy (MFM) and X-ray Magnetic Circular Dichroism Photo-Emission Electron Microscopy (XMCD-PEEM) in the shadow mode ( Fig. 1c) to reveal the three-dimensional texture of magnetization [16,30,31]. While in MFM, sharp ns-long pulses could be sent, in XMCD-PEEM the shape of current pulses was distorted to a minimum width of 10 − 15 ns, due to long cabling, UHV feedthroughs and the sample holder contacts.…”
mentioning
confidence: 99%
“…Following the procedure described by Jamet et al, which takes into account the progressive absorption of the x-ray beam through the sample crosssection [7], a vortex configuration in our NTs should result in perpendicular XMCD-PEEM contrast of the form shown in Fig. 1(a).…”
Section: Xmcd-peemmentioning
confidence: 99%
“…At equilibrium, the hollow magnetic geometry is expected to stabilize vortex-like flux-closure configurations with magnetization pointing along the NT circumference. Although vortex ends states have been observed in ferromagnetic nanowires (NWs) [7], the exchange energy penalty for the magnetic singularity along the vortex axis tends to favor non-fluxclosure states. In a NT, the lack of this axial Bloch point structure [8] is also expected to allow for fast magnetization reversal that begins with vortices nucleating at its ends and propagating along its length [9][10][11].…”
Section: Introductionmentioning
confidence: 99%
“…In particular, we show the experimental signatures of vortex end-domain nucleation in individual FNTs and reveal their dependence on the slant angle of the ends. Magnetization reversal in FNTs offers some potential advantages over the equivalent and well-understood process in ferromagnetic nanowires (NWs) [19][20][21]: In particular, the core-free geometry of FNTs has been predicted to favor uniform switching fields and high reproducibility [14,22,23]. Understanding and controlling the switching process in real FNTs is a crucial step toward enabling practical applications.…”
Section: Introductionmentioning
confidence: 99%