Effect of intense x-ray free-electron laser transient gratings on the magnetic domain structure of Tm:YIG
arxiv(2022)
摘要
Magnetic patterns can be controlled globally using fields or spin polarized
currents. In contrast, the local control of the magnetization on the nanometer
length scale remains challenging. Here, we demonstrate how magnetic domain
patterns in a Tm-doped yttrium iron garnet (Tm:YIG) thin film with
perpendicular magnetic anisotropy can be permanently and locally imprinted by
high intensity photon pulses of a hard x-ray transient grating (XTG).
Micromagnetic simulations provide a qualitative understanding of the observed
changes in the orientation of magnetic domains in Tm:YIG and XTG-induced
changes. The presented results offer a route for the local manipulation of the
magnetic state using hard XTG.
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