Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bulk and nano GaN: Role of Ga d states   We have studied the role of Ga 3d states in determining the properties of
bulk as well as nanoparticles of GaN using PAW potentials. A significant
contribution of the Ga d states in the valence band is found to arise from the
interaction of Ga 4d states with the dominantly N p states making up the
valence band. The errors arising from not treating the Ga 3d states as a part
of the valence are found to be similar, ~ 1%, for bulk as well as for
nanoclusters of GaN.

24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat