Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rotation of a single acetylene molecule on Cu(001) by tunneling
  electrons in STM   We study the elementary processes behind one of the pioneering works on STM
controlled reactions of single molecules [Stipe et al., Phys. Rev. Lett. 81,
1263 (1998)]. Using the Keldysh-Green function approach for the vibrational
generation rate in combination with DFT calculations to obtain realistic
parameters we reproduce the experimental rotation rate of an acetylene molecule
on a Cu(100) surface as a function of bias voltage and tunneling current. This
combined approach allows us to identify the reaction coordinate mode of the
acetylene rotation and its anharmonic coupling with the C-H stretch mode. We
show that three different elementary processes, the excitation of C-H stretch,
the overtone ladder climbing of the hindered rotational mode, and the
combination band excitation together explain the rotation of the acetylene
molecule on Cu(100).

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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
3
The categories of this paper are: physics
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: eess
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The categories of this paper are: stat
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
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The categories of this paper are: nlin