Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Particle-Hole Symmetry and the Reentrant Integer Quantum Hall Wigner
  Solid   The interplay of strong Coulomb interactions and of topology is currently
under intense scrutiny in various condensed matter and atomic systems. One
example of this interplay is the phase competition of fractional quantum Hall
states and the Wigner solid in the two-dimensional electron gas. Here we report
a Wigner solid at $\nu=1.79$ and its melting due to fractional correlations
occurring at $\nu=9/5$. This Wigner solid, that we call the reentrant integer
quantum Hall Wigner solid, develops in a range of Landau level filling factors
that is related by particle-hole symmetry to the so called reentrant Wigner
solid. We thus find that the Wigner solid in the GaAs/AlGaAs system straddles
the partial filling factor $1/5$ not only at the lowest filling factors, but
also near $\nu=9/5$. Our results highlight the particle-hole symmetry as a
fundamental symmetry of the extended family of Wigner solids and paint a
complex picture of the competition of the Wigner solid with fractional quantum
Hall states.

8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci