Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Investigation of the SERS spectra of copper phthalocianine adsorbed on
  gallium phosphide substrates   The SERS spectra of the phthalocianine molecule, adsorbed on the gallium
phosphide substrate are investigated. It is demonstrated that there appear
strong lines, which are forbidden in usual Raman scattering. Analysis of the
spectra indicates that these lines are associated with a strong quadrupole
light-molecule interaction and also by a strong enhancement of the tangential
components of the electric field on the surface. As it was demonstrated
earlier, the last effect is characteristic for SERS on semiconductor and
dielectric substrates, where there is the enhancement not only of the normal,
but of the tangential components of the electric field on the surface.

0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga