Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tunneling properties of vertical heterostructures of multilayer
  hexagonal boron nitride and graphene   We use first-principle density functional theory (DFT) to study the transport
properties of single and double barrier heterostructures realized by stacking
multilayer h-BN or BC$_{2}$N, and graphene films between graphite leads. The
heterostructures are lattice matched. The considered single barrier systems
consist of layers of up to five h-BN or BC$_{2}$N monoatomic layers (Bernal
stacking) between graphite electrodes. The transmission probability of an h-BN
barrier exhibits two unusual behaviors: it is very low also in a classically
allowed energy region, due to a crystal momentum mismatch between states in
graphite and in the dielectric layer, and it is only weakly dependent on energy
in the h-BN gap, because the imaginary part of the crystal momentum of h-BN is
almost independent of energy. The double barrier structures consist of h-BN
films separated by up to three graphene layers. We show that already five
layers of h-BN strongly suppress the transmission between graphite leads, and
that resonant tunneling cannot be observed because the energy dispersion
relation cannot be decoupled in a vertical and a transversal component.

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The categories of this paper are: nlin
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The categories of this paper are: physics
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-th
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The categories of this paper are: cs
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: solv-int
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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: q-bio
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The categories of this paper are: cmp-lg