Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transport and drag in undoped electron-hole bilayers   We investigate transport and Coulomb drag properties of semiconductor-based
electron-hole bilayer systems. Our calculations are motivated by recent
experiments in undoped electron-hole bilayer structures based on GaAs-AlGaAs
gated double quantum well systems. Our results indicate that the background
charged impurity scattering is the most dominant resistive scattering mechanism
in the high-mobility bilyers. We also find that the drag transresistivity is
significantly enhanced when the electron-hole layer separation is small due to
the exchange induced renormalization of the single layer compressibility.

2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess