Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Structure and Vibrations of the Vicinal Copper (211) Surface   We report a first principles theoretical study of the surface relaxation and
lattice dynamics of the Cu(211) surface using the plane wave pseudopotential
method. We find large atomic relaxations for the first several atomic layers
near the step edges on this surface, and a substantial step-induced
renormalization of the surface harmonic force constants. We use the results to
study the harmonic fluctuations around the equilibrium structure and find three
new step-derived features in the zone center vibrational spectrum. Comparison
of these results with previous theoretical work and weith experimental studies
using inelastic He scattering are reported.

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The categories of this paper are: stat
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The categories of this paper are: mtrl-th
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The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: econ
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: cmp-lg
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The categories of this paper are: quant-ph
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The categories of this paper are: chem-ph