Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anisotropic Hole Drift Velocity in 4H-SiC   A theoretical study on the nonlinear transport of holes in the transient and
steady state of p-doped 4H-SiC under the influence of high electric fields is
presented. It is based on a nonlinear quantum kinetic theory which provides a
clear description of the dissipative phenomena that are evolving in the system.
The hole drift velocity and the nonequilibrium temperature are obtained, and
their dependence on the electric field strength is derived and analyzed.

3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
2
The categories of this paper are: math