TY - JOUR
T1 - Giant spin and orbital moment anisotropies of a Cu-phthalocyanine monolayer
AU - Stepanow, S.
AU - Mugarza, A.
AU - Ceballos, G.
AU - Moras, P.
AU - Cezar, J. C.
AU - Carbone, C.
AU - Gambardella, P.
PY - 2010/7/8
Y1 - 2010/7/8
N2 - The magnetism of a Cu-phthalocyanine (CuPc) monolayer on Ag(100) was investigated using x-ray magnetic circular dichroism (XMCD) and ligand-field multiplet calculations. Contrary to other metal-Pc adsorbed on metals, we show that the local CuPc moment survives the interaction with the electronic states of the substrate and presents enhanced susceptibility with respect to bulk powder samples. Our measurements reveal extraordinary orbital moment anisotropy (500%) and an anisotropic spin dipole moment up to twice the isotropic spin in a metal-organic layer. A complete description of the orbital, spin, and spin-orbit operators is provided based on the XMCD sum rules. © 2010 The American Physical Society.
AB - The magnetism of a Cu-phthalocyanine (CuPc) monolayer on Ag(100) was investigated using x-ray magnetic circular dichroism (XMCD) and ligand-field multiplet calculations. Contrary to other metal-Pc adsorbed on metals, we show that the local CuPc moment survives the interaction with the electronic states of the substrate and presents enhanced susceptibility with respect to bulk powder samples. Our measurements reveal extraordinary orbital moment anisotropy (500%) and an anisotropic spin dipole moment up to twice the isotropic spin in a metal-organic layer. A complete description of the orbital, spin, and spin-orbit operators is provided based on the XMCD sum rules. © 2010 The American Physical Society.
UR - https://www.scopus.com/pages/publications/77956526886
U2 - 10.1103/PhysRevB.82.014405
DO - 10.1103/PhysRevB.82.014405
M3 - Article
SN - 1098-0121
VL - 82
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 1
M1 - 014405
ER -