Magnetic Imaging

Bauer, E.

doi:10.1007/978-1-4939-0935-3_7

Cited by 1 publication

(2 citation statements)

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“…The model system chosen for this work is affine to the thoroughly studied Co/Ru(0001), sharing with it the same substrate symmetry (hcp structure at room temperature; see the Methods Section) and similar lattice constant. It is important to note that ultrathin Co films frequently display SRTs and other intriguing magnetic configurations . In-plane to out-of-plane and out-of-plane to in-plane SRTs were observed for hcp Co/Ru(0001), occurring at thicknesses of 2 and 3 atomic layers (ALs), respectively .…”

Section: Methodsmentioning

confidence: 66%

“…All experiments were carried out at the "Nanospectroscopy" beamline of the Elettra Synchrotron (Trieste, Italy), using the spectroscopic photoemission and low-energy electron microscope (SPELEEM) . This microscope allows us to correlate the magnetic state of the Co film, probed by X-ray magnetic circular dichroism photoemission electron microscopy (XMCD-PEEM), , to its surface stoichiometry and electronic structure, characterized by means of laterally resolved X-ray photoelectron spectroscopy (XPS) and microprobe angle-resolved photoelectron spectroscopy (μ-ARPES). Crucial to our work, the SPELEEM can also be operated as a LEEM, permitting us not only to monitor the growth and structural quality of the cobalt films, but also to perform micro-spot irradiation with its electron source.…”

Section: Methodsmentioning

confidence: 99%

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Magnetic Patterning by Electron Beam-Assisted Carbon Lithography

Genoni

Genuzio

Menteş

et al. 2018

ACS Appl. Mater. Interfaces

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We report on the proof of principle of a scalable method for writing the magnetic state by electron-stimulated molecular dissociative adsorption on ultrathin Co on Re(0001). Intense microfocused low-energy electron beams are used to promote the formation of surface carbides and graphitic carbon through the fragmentation of carbon monoxide. Upon annealing at the CO desorption temperature, carbon persists in the irradiated areas, whereas the clean surface is recovered elsewhere, giving origin to chemical patterns with nanometer-sharp edges. The accumulation of carbon is found to induce an in-plane to out-of-plane spin reorientation transition in Co, manifested by the appearance of striped magnetic domains. Irradiation at doses in excess of 1000 L of CO followed by ultrahigh vacuum annealing at 380 °C determines the formation of a graphitic overlayer in the irradiated areas, under which Co exhibits out-of-plane magnetic anisotropy. Domains with opposite magnetization are separated here by chiral Neél walls. Our fabrication protocol adds lateral control to spin reorientation transitions, permitting to tune the magnetic anisotropy within arbitrary regions of mesoscopic size. We envisage applications in the nano-engineering of graphene-spaced stacks exhibiting the desired magnetic state and properties.

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Section: Methodsmentioning

confidence: 66%