TY - JOUR
T1 - Out-of-Plane Alignment of Er(trensal) Easy Magnetization Axes Using Graphene
AU - Dreiser, Jan
AU - Pacchioni, Giulia E.
AU - Donati, Fabio
AU - Gragnaniello, Luca
AU - Cavallin, Alberto
AU - Pedersen, Kasper Steen
AU - Bendix, Jesper
AU - Delley, Bernard
AU - Pivetta, Marina
AU - Rusponi, Stefano
AU - Brune, Harald
PY - 2016
Y1 - 2016
N2 - We have studied Er(trensal) single -ion magnets adsorbed on graphene/Ru(0001), on graphene/Ir(111), and on bare Ru(0001) by scanning tunneling microscopy and X-ray absorption spectroscopy. On graphene, the molecules self -assemble into dense and well -ordered islands with their magnetic easy axes perpendicular to the surface. In contrast, on bare Ru(0001), the molecules are disordered, exhibiting only weak directional preference of the easy magnetization axis. The perfect out -of -plane alignment of the easy axes on graphene results from the molecule molecule interaction, which dominates over the weak adsorption on the graphene surface. Our results demonstrate that the net magnetic properties of a molecular submonolayer can be tuned using a graphene spacer layer, which is attractive for hybrid molecule inorganic spintronic devices.
AB - We have studied Er(trensal) single -ion magnets adsorbed on graphene/Ru(0001), on graphene/Ir(111), and on bare Ru(0001) by scanning tunneling microscopy and X-ray absorption spectroscopy. On graphene, the molecules self -assemble into dense and well -ordered islands with their magnetic easy axes perpendicular to the surface. In contrast, on bare Ru(0001), the molecules are disordered, exhibiting only weak directional preference of the easy magnetization axis. The perfect out -of -plane alignment of the easy axes on graphene results from the molecule molecule interaction, which dominates over the weak adsorption on the graphene surface. Our results demonstrate that the net magnetic properties of a molecular submonolayer can be tuned using a graphene spacer layer, which is attractive for hybrid molecule inorganic spintronic devices.
U2 - 10.1021/acsnano.5b08178
DO - 10.1021/acsnano.5b08178
M3 - Journal article
C2 - 26814851
SN - 1936-0851
VL - 10
SP - 2887
EP - 2892
JO - A C S Nano
JF - A C S Nano
IS - 2
ER -