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Creator |
18ae2b8a4c0f80e673c4f652fc5798b0 |
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Creator |
ext-270cd3015b189af68a3c1754f7c066e1 |
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Date |
2006-05-18 |
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Is Part Of |
p10980121 |
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Is Part Of |
repository |
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abstract |
The uniaxial in-plane magnetic anisotropy (UIP-MA) constant is calculated for a single
step on the (001) surface of fcc Co(N) films. The calculations are done for both an
undecorated step and the step decorated with one or more, up to seven, Cu wires. Our
objective is to explain the mechanisms by which the decoration decreases the UIP-MA
constant, which is the effect observed experimentally for ultrathin Co films deposited
on vicinal (001) Cu surfaces and can lead to reorientation of magnetization within
the film plane. Theoretical calculations performed with a realistic tight-binding
model show that the step decoration changes the UIP-MA constant significantly only
if the splitting between the on-site energies of various d-orbitals is included for
atoms located near the step edge. The local relaxation of atomic structure around
the step is also shown to have a significant effect on the shift of the UIP-MA constant.
The influence of these two relevant factors is analyzed further by examining individual
contributions to the UIP-MA constant from atoms around the step. The magnitude of
the obtained UIP-MA shift agrees well with experimental data. It is also found that
an additional shift due to possible charge transfer between Cu and Co atoms is very
small. |
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authorList |
authors |
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status |
peerReviewed |
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volume |
73 |
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type |
AcademicArticle |
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type |
Article |
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label |
Cinal, M. and Umerski, Andrey (2006). Magnetic anisotropy of vicinal (001) fcc
Co films: Role of crystal splitting and structure relaxation in the step-decoration
effect. Physical Review B, 73 p. 184423. |
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label |
Cinal, M. and Umerski, Andrey (2006). Magnetic anisotropy of vicinal (001) fcc Co
films: Role of crystal splitting and structure relaxation in the step-decoration effect.
Physical Review B, 73 p. 184423. |
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Title |
Magnetic anisotropy of vicinal (001) fcc Co films: Role of crystal splitting and structure
relaxation in the step-decoration effect |
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in dataset |
oro |