Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First principles study of the Si(557)-Au surface   We have performed a density functional study of fifteen different structural
models of the Si(557)-Au surface reconstruction. Here we present a brief
summary of the main structural trends obtained for the more favourable models,
focusing afterwards in a detailed description of the atomic structure,
electronic properties and, simulated STM images of the most stable model
predicted by our calculations. This structure is in very good agreement with
that recently proposed from X-ray diffraction measurements by Robinson et al.
[Phys. Rev. Lett. 88, (2002) 096194].

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The categories of this paper are: q-bio
1
The categories of this paper are: cs
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin