Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phonon confinement and substitutional disorder in Cd1-xZnxS Nanocrystals   1LO optical phonons in free-standing mixed Cd1-xZnxS nanocrystals,
synthesized using chemical precipitation, are investigated using Raman
spectroscopy. As expected for the nanocrystals, the 1-LO modes are found to
appear at slightly lower wavenumbers than those in the bulk mixed crystals and
exhibit one mode behavior. On the other hand, the line broadening is found to
be much more than that can be accounted on the basis of phonon confinement.
  From the detailed line shape analysis it turns out that the substitutional
disorder in the mixed crystals contributes much more to the line broadening
than the phonon confinement. The linewidth arising from these mechanisms are
also extracted from the analysis.

26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th