Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Emergence of a non-Fowler-Nordheim-type behavior for a general planar
  tunneling barrier   In this work we investigate a generalized tunneling barrier for planar
emitters at zero-temperature. We present the evidence of the emergence of a
non-Fowler-Nordheim-type general behavior for the field emission current
density in the case that the Fermi energy ($\mu$) is comparable with or smaller
that the decay width ($d_F$). Therefore, for some non-metals or materials that
have very small Fermi energy the standard Fowler-Nordheim-type theory may
require a correction. In the opposite regime, i.e., for $\mu$ much larger that
$d_F$, we confirm that the conventional theory is suitable for metals.

1
The categories of this paper are: cs
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th