Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scanning tunneling microscopy of monoatomic gold chains on vicinal
  Si(335) surface: experimental and theoretical study   We study electronic and topographic properties of the Si(335) surface,
containing Au wires parallel to the steps. We use scanning tunneling microscopy
(STM) supplemented by reflection of high energy electron diffraction (RHEED)
technique. The STM data show the space and voltage dependent oscillations of
the distance between STM tip and the surface which can be explained within one
band tight binding Hubbard model. We calculate the STM current using
nonequilibrium Keldysh Green function formalism.

18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph