Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tunability of the Fractional Quantum Hall States in Buckled Dirac
  Materials   We report on the fractional quantum Hall states of germanene and silicene
where one expects a strong spin-orbit interaction. This interaction causes an
enhancement of the electron-electron interaction strength in one of the Landau
levels corresponding to the valence band of the system. This enhancement
manifests itself as an increase of the fractional quantum Hall effect gaps
compared to that in graphene and is due to the spin-orbit induced coupling of
the Landau levels of the conduction and valence bands, which modifies the
corresponding wave functions and the interaction within a single level. Due to
the buckled structure, a perpendicular electric field lifts the valley
degeneracy and strongly modifies the interaction effects within a single Landau
level: in one valley the perpendicular electric field enhances the interaction
strength in the conduction band Landau level, while in another valley, the
electric field strongly suppresses the interaction effects.

1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph