Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Orientational Order and Depinning of the Disordered Electron Solid   We study the ground state of two-dimensional classical electron solids under
the influence of modulation-doped impurities by using a simulated annealing
molecular dynamics method. By changing the setback distance as a parameter, we
find that in the strong disorder limit the ground state configuration contains
both isolated dislocations and disclinations, whereas in the weak disorder
regime only dislocations are present. We show, via continuum elasticity theory,
that the ground state of the lattice should be unstable against a proliferation
of free disclinations above a critical dislocation density. Associated with
this, the behavior of the threshold electric field as a function of the setback
distance changes.

23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org