Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Josephson current through charge density waves   The effect of the collective charge density wave (CDW) motion on the
Josephson current in a superconductor/charge density wave/superconductor
junction is studied theoretically. By deriving the kinetic equations for the
coupled superconductor-CDW system, it is shown that below the critical current
the CDW does not move. Biased above this value, the Josephson current
oscillates as a function of the velocity of the sliding CDW and the collective
mode acts as a non-linear shunting resistor parallel to the Josephson channel.
The effects of impurity pinning are accounted for at a phenomenological level.

5
The categories of this paper are: gr-qc
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The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an