Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phonon confinement and plasmon-phonon interaction in nanowire based
  quantum wells   Resonant Raman spectroscopy is realized on closely spaced nanowire based
quantum wells. Phonon quantization consistent with 2.4 nm thick quantum wells
is observed, in agreement with cross-section transmission electron microscopy
measurements and photoluminescence experiments. The creation of a high density
plasma within the quantized structures is demonstrated by the observation of
coupled plasmon-phonon modes. The density of the plasma and thereby the
plasmon-phonon interaction is controlled with the excitation power. This work
represents a base for further studies on confined high density charge systems
in nanowires.

27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat