Publications in Scientific Journals:

B. Lazarovits, L. Szunyogh, P. Weinberger, B. Újfalussy:
"Magnetic properties of finite Fe chains at fcc Cu(001) and Cu(111) surfaces ";
Physical Review B, 68 (2003), 024433-1 - 024433-9.

English abstract:
We present a systematic study of the magnetic moments and magnetocrystalline anisotropy of finite monoatomic
Fen (1<n<9) chains deposited along the (11 0) direction on top of fcc Cu~001! and Cu~111! surfaces
as well as embedded into the uppermost three surface layers and into a perfect copper bulk host. The calculations
are performed fully relativistically using the embedding technique within the Korringa-Kohn-Rostoker
method. We focused our investigations on the effect of the interaction between the Fe atoms as well as between
the Fe and host atoms on the magnetic properties of the chains. We found that the calculated spin and orbital
moments in the Fe chains are systematically larger than in the corresponding monolayer. Exploring the magnetic
anisotropy properties of these systems we obtained a strong out-of-plane easy axis for wires deposited
both on the Cu~001! and Cu~111! surfaces, while for the embedded chains the orientation of the easy axis
depends on the distance from the surface. We also found remarkable anisotropies for two different in-plane
magnetic orientations: namely, for the one parallel and the other perpendicular to the chains.
DOI: 10.1103/PhysRevB.68.024433 PACS number~s!: 75.30.Hx, 73.22.2f, 75.30.Gw

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