Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Influence of the Characteristics of the STM-tip on the
  Electroluminescence Spectra   We analyze the influence of the characteristics of the STM-tip (applied
voltage, tip radius) on the electroluminescence spectra from an STM-tip-induced
quantum dot taking into account the many-body effects. We find that positions
of electroluminescence peaks, attributed to the electron-hole recombination in
the quantum dot, are very sensitive to the shape and size of the confinement
potential as determined by the tip radius and the applied voltage. A critical
value of the tip radius is found, at which the luminescence peak positions as a
function of the tip radius manifest a transition from decreasing behavior for
smaller radii to increasing behavior for larger radii. We find that this
critical value of the tip radius is related to the confinement in the lateral
and normal direction.

32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess