Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Resonant Tunneling and Intrinsic Bistability in Twisted Graphene
  Structures   We predict that vertical transport in heterostructures formed by twisted
graphene layers can exhibit a unique bistability mechanism. Intrinsically
bistable $I$-$V$ characteristics arise from resonant tunneling and interlayer
charge coupling, enabling multiple stable states in the sequential tunneling
regime. We consider a simple trilayer architecture, with the outer layers
acting as the source and drain and the middle layer floating. Under bias, the
middle layer can be either resonant or non-resonant with the source and drain
layers. The bistability is controlled by geometric device parameters easily
tunable in experiments. The nanoscale architecture can enable uniquely fast
switching times.

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The categories of this paper are: cmp-lg
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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: solv-int
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The categories of this paper are: q-fin
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The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: physics
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The categories of this paper are: math
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The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-th
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-ex