Magnetic excitations of rare earth atoms and clusters on metallic surfaces.
Magnetic anisotropy and magnetization dynamics of rare earth Gd atoms and dimers on Pt(111) and Cu(111) were investigated with inelastic tunneling spectroscopy. The spin excitation spectra reveal that giant magnetic anisotropies and lifetimes of the excited states of Gd are nearly independent of the supporting surfaces and the cluster size. In combination with theoretical calculations, we argue that the observed features are caused by strongly localized character of 4f electrons in Gd atoms and clusters.
Karlsruhe Institute of Technology, Physikalisches Institut, Wolfgang-Gaede-Str. 1, 76131 Karlsruhe, Germany.
Tobias
T
Schuh
Toshio
T
Miyamachi
Stefan
S
Gerstl
Matthias
M
Geilhufe
Martin
M
Hoffmann
Sergey
S
Ostanin
Wolfram
W
Hergert
Arthur
A
Ernst
Wulf
W
Wulfhekel
D003198:Computer Simulation; D005682:Gadolinium / Q000737:chemistry*; D060526:Magnetic Fields; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008674:Metals, Rare Earth / Q000737:chemistry; D008956:Models, Chemical; D010316:Particle Size; D013499:Surface Properties
D008674:Metals, Rare Earth; D005682:Gadolinium