Oscillatory magnetic anisotropy in one-dimensional atomic wires.
One-dimensional Co atomic wires grown on Pt(997) have been investigated by x-ray magnetic circular dichroism. Strong changes of the magnetic properties are observed as the system evolves from 1D- to 2D-like. The easy axis of magnetization, the magnetic anisotropy energy, and the coercive field oscillate as a function of the transverse width of the wires, in agreement with theoretical predictions for 1D metal systems.
Institut de Physique des Nanostructures, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
P
P
Gambardella
A
A
Dallmeyer
K
K
Maiti
M C
MC
Malagoli
S
S
Rusponi
P
P
Ohresser
W
W
Eberhardt
C
C
Carbone
K
K
Kern