CERN Accelerating science

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1.
Hg adatoms on graphene: A first-principles study / Fenta, A S (CERN) ; Amorim, C O (Aveiro U.) ; Gonçalves, J N (Aveiro U.) ; Fortunato, N (Aveiro U.) ; Barbosa, M B (Porto U.) ; Araujo, J P (Leuven U.) ; Houssa, M (U. Gent (main)) ; Cottenier, S (U. Gent (main)) ; Van Bael, M J (Leuven U.) ; Correia, J G (CERN) et al.
The interest in understanding the interaction between graphene and atoms that are adsorbed on its surface (adatoms) spans a wide range of research fields and applications, for example, to controllably change the properties of graphene in electronic devices or to detect those changes in graphene-based sensors. We present a density functional theory study of the interaction between graphene and Hg adatoms. [...]
2020 - 10 p. - Published in : J. Phys. Mater. 4 (2020) 015002
2.
Evidence of tetragonal distortion as the origin of the ferromagnetic ground state in $\gamma$−Fe nanoparticles / Augustyns, V (Leuven U.) ; van Stiphout, K (Leuven U.) ; Joly, V (Leuven U.) ; Lima, T A L (Leuven U.) ; Lippertz, G (Leuven U.) ; Trekels, M (Leuven U.) ; Menéndez, E (Leuven U.) ; Kremer, F (Australian Natl. U., Canberra) ; Wahl, U (IST, Lisbon (main)) ; Costa, A R G (IST, Lisbon (main)) et al. /Isolde
$\gamma$−Fe and related alloys are model systems of the coupling between structure and magnetism in solids. Since different electronic states (with different volumes and magnetic ordering states) are closely spaced in energy, small perturbations can alter which one is the actual ground state. [...]
2017 - Published in : Phys. Rev. B 96 (2017) 174410 Fulltext: PDF;
3.
Paramagnetism and antiferromagnetic interactions in single-phase Fe-implanted ZnO / Pereira, Lino Miguel da Costa (Leuven U. ; Porto U.) ; Wahl, Ulrich (IST/ITN, Lisbon) ; Correia, João Guilherme (IST/ITN, Lisbon) ; Van Bael, M J (Leuven U.) ; Temst, Kristiaan (Leuven U.) ; Vantomme, André (Leuven U.) ; Araújo, João Pedro (Porto U.) /EC-SLI Collaboration
As the intrinsic origin of the high temperature ferromagnetism often observed in wide-gap dilute magnetic semiconductors becomes increasingly debated, there is a growing need for comprehensive studies on the single-phase region of the phase diagram of these materials. Here we report on the magnetic and structural properties of Fe-doped ZnO prepared by ion implantation of ZnO single crystals. [...]
CERN-OPEN-2014-010.- Leuven : Instituut voor Kern- en Stralingsfysica, KU Leuven, 2013 - 30 p. - Published in : J. Phys.: Condens. Matter 25 (2013) 416001 Preprint: PDF;

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