J. Dorantesdavila et Gm. Pastor, MAGNETIC-ANISOTROPY OF ONE-DIMENSIONAL NANOSTRUCTURES OF TRANSITION-METALS, Physical review letters, 81(1), 1998, pp. 208-211
The magnetic anisotropy energy (MAE) of 3d transition-metal wires is c
alculated self-consistently as a function of length, width, structure,
and d-band filling. One-dimensional infinite chains show MAE's which
are an order of magnitude larger than in two-dimensional thin films. A
further enhancement is often obtained by reducing the chain length l
(l less than or equal to 20 atoms). The MAE of multichains (ladders) o
scillates as a function of chain width and depends strongly on the tra
nsversal structure. The easy axis of Co wires changes from in-line to
off-plane after deposition on Pd(110). Ladders and deposited chains sh
ow important in-plane anisotropies.