Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transport in two-dimensional disordered semimetals   We theoretically study transport in two-dimensional semimetals. Typically,
electron and hole puddles emerge in the transport layer of these systems due to
smooth fluctuations in the potential. We calculate the electric response of the
electron-hole liquid subject to zero and finite perpendicular magnetic fields
using an effective medium approximation and a complimentary mapping on resistor
networks. In the presence of smooth disorder and in the limit of weak
electron-hole recombination rate, we find for small but finite overlap of the
electron and hole bands an abrupt upturn in resistivity when lowering the
temperature but no divergence at zero temperature. We discuss how this behavior
is relevant for several experimental realizations and introduce a simple
physical explanation for this effect.

17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin