Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Intrinsic giant Stark effect of boron-carbon-nitride nanoribbons with
  zigzag edges   Electronic properties of zigzag boron-carbon-nitride (BCN) nanoribbons, where
the outermost C atoms on the edges of graphene nanoribbons are replaced by B or
N atoms, are theoretically studied using the first-principles calculations. We
show that BCN nanoribbons are metallic, since several bands cross the Fermi
level. For BCN nanoribbons in a rich H$_2$ environment, the so-called nearly
free electron state appears just above the Fermi level because of the intrinsic
giant Stark effect due to the internal electric field of a transverse dipole
moment. The position of the nearly free electron state can be controlled by
applying an electric field parallel to the dipole moment. The hydrogenation of
the nitrogen atom is necessary for the appearance of the giant Stark effect in
BCN nanoribbons. We also discuss the effect of stacking order on the intrinsic
giant Stark effect in bilayer BCN nanoribbons.

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The categories of this paper are: patt-sol
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The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
3
The categories of this paper are: physics
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The categories of this paper are: econ
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat
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The categories of this paper are: q-fin