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Rubidium intercalation in epitaxial monolayer graphene
Letizia Ferbel, Stefano Veronesi, Tevfik Onur Mentes +7
Alkali metal intercalation of graphene layers has been of particular interest due to potential applications in electronics, energy storage, and catalysis. Rubidium (Rb) is one of t…
Boron nitride-graphene in-plane hexagonal heterostructure in oxygen environment
Elena Magnano, Silvia Nappini, Igor Pis +4
Aiming to improve fabrication protocols for boron nitride and graphene (h-BNG) lateral heterostructures, we studied the growth of h-BNG thin films on platinum and their behavior in…
In-plane magnetic domains and Néel-like domain walls in thin flakes of the room temperature CrTe van der Waals ferromagnet
Anike Purbawati, Johann Coraux, Jan Vogel +17
The recent discovery of magnetic van der Waals materials has triggered a wealth of investigations in materials science, and now offers genuinely new prospects for both fundamental…
Pnictogens Allotropy and Phase Transformation during van der Waals Growth
Matthieu Fortin-Deschênes, Hannes Zschiesche, Tevfik O. Menteş +13
Pnictogens have multiple allotropic forms resulting from their ns2 np3 valence electronic configuration, making them the only elemental materials to crystallize in layered van der…
Spin structure and spin Hall magnetoresistance of epitaxial thin films of the insulating non-collinear antiferromagnet SmFeO
T Hajiri, L. Baldrati, R. Lebrun +10
We report a combined study of imaging the antiferromagnetic (AFM) spin structure and measuring the spin Hall magnetoresistance (SMR) in epitaxial thin films of the insulating non-c…
Full field electron spectromicroscopy applied to ferroelectric materials
N. Barrett, J. E. Rault, J. L. Wang +15
The application of PhotoEmission Electron Microscopy (PEEM) and Low Energy Electron Microscopy (LEEM) techniques to the study of the electronic and chemical structure of ferroelect…
Flux-closure domains in high aspect ratio electroless-deposited CoNiB nanotubes
Michal Staňo, Sandra Schaefer, Alexis Wartelle +13
We report the imaging of magnetic domains in ferromagnetic CoNiB nanotubes with very long aspect ratio, fabricated by electroless plating. While axial magnetization is expected for…
Room temperature chiral magnetic skyrmion in ultrathin magnetic nanostructures
Olivier Boulle, Jan Vogel, Hongxin Yang +16
Magnetic skyrmions are chiral spin structures with a whirling configuration. Their topological properties, nanometer size and the fact that they can be moved by small current densi…
Quantitative analysis of shadow X-ray Magnetic Circular Dichroism Photo-Emission Electron Microscopy
S. Jamet, S. Da Col, N. Rougemaille +10
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 s…
Broadband Setup for Magnetic-Field-Induced Domain Wall Motion in Cylindrical Nanowires
Alexis Wartelle, Christophe Thirion, Raja Afid +9
In order to improve the precision of domain wall dynamics measurements, we develop a coplanar waveguide-based setup where the domain wall motion should be triggered by pulses of ma…
Observation of Bloch-point domain walls in cylindrical magnetic nanowires
Sandrine Da Col, Segolene Jamet, Nicolas Rougemaille +8
Topological protection is an elegant way of warranting the integrity of quantum and nanosized systems. In magnetism one example is the Bloch-point, a peculiar object implying the l…
Self-organization in Pd/W(110): interplay between surface structure and stress
N. Stojic, T. O. Mentes, N. Binggeli
It has recently been shown that submonolayer Pd on W(110) forms highly-ordered linear mesoscopic stripes at high temperatures. The stripes display an internal Pd superstructure wit…
Spin configurations in Co2FeAl0.4Si0.6 Heusler alloy thin film elements
C. A. F. Vaz, J. Rhensius, J. Heidler +11
We determine experimentally the spin structure of half-metallic Co2FeAl0.4Si0.6 Heusler alloy elements using magnetic microscopy. Following magnetic saturation, the dominant magnet…
Effect of Oxygen Adsorption on the Local Properties of Epitaxial Graphene on SiC (0001)
C. Mathieu, B. Lalmi, T. O. Mentes +5
The effect of oxygen adsorption on the local structure and electronic properties of monolayer graphene grown on SiC(0001) has been studied by means of Low Energy Electron Microscop…
Making ARPES Measurements on Corrugated Monolayer Crystals: Suspended Exfoliated Single-Crystal Graphene
Kevin R. Knox, Andrea Locatelli, Mehmet B. Yilmaz +6
Free-standing exfoliated monolayer graphene is an ultra-thin flexible membrane, which exhibits out of plane deformation or corrugation. In this paper, a technique is described to m…
Temperature dependence of surface stress across an order-disorder transition: p(1x2)O/W(110)
N. Stojic, T. O. Mentes, N. Binggeli +3
Strain relaxations of a p(1x2) ordered oxygen layer on W(110) are measured as a function of temperature across the disordering transition using low-energy electron diffraction. The…
Stress induced stripe formation in Pd/W(110)
T. O. Mentes, A. Locatelli, L. Aballe +1
A stress-induced stripe phase of submonolayer Pd on W(110) is observed by low-energy electron microscopy. The temperature dependence of the pattern is explained by the change both…
Spectro-microscopy of single and multi-layer graphene supported by a weakly interacting substrate
Kevin R. Knox, Shancai Wang, Alberto Morgante +6
We report measurements of the electronic structure and surface morphology of exfoliated graphene on an insulating substrate using angle-resolved photoemission and low energy electr…
Strain relaxation in small adsorbate islands: O on W(110)
T. O. Mentes, N. Stojic, N. Binggeli +5
The stress-induced lattice changes in a p(1x2) ordered oxygen layer on W(110) are measured by low-energy electron diffraction. We have observed that small oxygen islands show a mis…