Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The influence of hydrogen adsorption on magnetic properties of
  Ni/Cu(001) surface   Ni/Cu(001) is known as a unique system showing the spin-reorientation
transition from an in-plane to out-of-plane magnetization direction when the
Ni-overlayer thickness is increased. We investigate different relaxed
multilayer structures with a hydrogen adlayer using the full-potential
linearized augmented plane-wave method. The relaxed geometries, determined by
total energy and atomic force calculations, show that H-monolayer strongly
influences the interlayer distance between the Ni-surface and sub-surface
layers yielding the outward relaxation of Ni-layer at H/Ni interface.
Furthermore, large decrease of local magnetic moments at the top surface area
is found for the surface covered by H. The magneto-crystalline anisotropy
energies calculated for fully relaxed H/Ni-films. The spin-reorientation
transition critical thickness of 4 ML is found in good quantitative agreement
with the experiment.

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The categories of this paper are: chem-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
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The categories of this paper are: atom-ph
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The categories of this paper are: solv-int
3
The categories of this paper are: physics
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The categories of this paper are: eess
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The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
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The categories of this paper are: plasm-ph