Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-field Current-carrying Capacity of Semiconducting Carbon Nanotubes   It is shown that current saturation in semiconducting carbon nanotubes is
indistinguishable from metallic nanotubes if the carrier density is above a
critical value determined by the bandgap and the LO phonon energy. This feature
stems from the higher number of current-carrying states in the semiconducting
tubes due to the van-Hove singularity at the band-edge. Above this critical
carrier density, the ensemble saturation velocity at high-fields is found to be
independent of the bandgap, but strongly dependent on the carrier density,
explaining recent observations.

24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
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
34
The categories of this paper are: chem-ph