Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Adsorbate-induced substrate relaxation and the adsorbate-adsorbate
  interaction   We formulate the theory of the perturbation caused by an adsorbate upon the
substrate lattice in terms of a local modification of the interatomic potential
energy around the adsorption site, which leads to the relaxation of substrate
atoms. We apply the approach to CO chemisorption on close-packed metal
surfaces, and show that the adsorbate-adsorbate interaction and a variety of
other properties can be well described by a simple model.

20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int