Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Absolute negative conductivity and zero-resistance states in two
  dimensional electron systems: A plausible scenario   We present a model which provides a plausible explanation of the effect of
zero-resistance and zero-conductance states in two-dimensional electron systems
subjected to a magnetic field and irradiated with microwaves observed in a
number of experiments and of the effect main features. The model is based on
the concept of absolute negative conductivity associated with photon-assisted
scattering of electrons on impurities. It is shown that the main features of
the effect can be attributed to the interplay of different electron scattering
mechanisms.

30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga