Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Adsorption site determination of a molecular monolayer via inelastic
  tunneling   We have combined scanning tunneling microscopy with inelastic electron
tunneling spectroscopy (IETS) and density functional theory (DFT) to study a
tetracyanoethylene monolayer on Ag(100). Images show that the molecules arrange
in locally ordered patterns with three non-equivalent, but undeterminable,
adsorption sites. While scanning tunneling spectroscopy only shows subtle
variations of the local electronic structure at the three different positions,
we find that vibrational modes are very sensitive to the local atomic
environment. IETS detects sizeable mode frequency shifts of the molecules
located at the three topographically detected sites, which permits us to
determine the molecular adsorption sites through identification with DFT
calculations.

7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
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The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int