Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charge Density Wave Ratchet   We propose to operate a locally-gated charge density wave as an electron
pump. Applying an oscillating gate potential with frequency $f$ causes equally
spaced plateaux in the sliding charge density wave current separated by $\Delta
I=2eNf,$ where $N$ is the number of parallel chains. The effects of thermal
noise are investigated.

9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs