Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interplay between destructive quantum interference and symmetry-breaking
  phenomena in graphene quantum junctions   We study the role of electronic spin and valley symmetry in the quantum
interference (QI) patterns of the transmission function in graphene quantum
junctions. In particular, we link it to the position of the destructive QI
anti-resonances. When the spin or valley symmetry is preserved, electrons with
opposite spin or valley display the same interference pattern. On the other
hand, when a symmetry is lifted the anti-resonances are split, with a
consequent dramatic differentiation of the transport properties in the
respective channel. We demonstrate rigorously this link in terms of the
analytical structure of the electronic Green function which follows from the
symmetries of the microscopic model and we confirm the result with numerical
calculations for graphene nanoflakes. We argue that this is a generic and
robust feature that can be exploited in different ways for the realization of
nanoelectronic QI devices, generalizing the recent proposal of a QI-assisted
spin-filtering effect [A. Valli et al. Nano Lett. 18, 2158 (2018)].

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The categories of this paper are: astro-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: eess
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The categories of this paper are: chem-ph
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The categories of this paper are: econ