Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-dependent transport through interacting graphene armchair
  nanoribbons   We investigate spin effects in transport across fully interacting, finite
size graphene armchair nanoribbons (ACNs) contacted to collinearly
spin-polarized leads. In such systems, the presence of short ranged Coulomb
interaction between bulk states and states localized at the ribbon ends leads
to novel spin-dependent phenomena. Specifically, the total spin of the low
energy many-body states is conserved during tunneling but that of the bulk and
end states is not. As a consequence, in the single-electron regime, dominated
by Coulomb blockade phenomena, we find pronounced negative differential
conductance features for ACNs contacted to parallel polarized leads. These
features are however absent for an anti-parallel contact configuration, which
in turn leads within a certain gate and bias voltage region to a negative
tunneling magneto-resistance. Moreover, we analyze the changes in the transport
characteristics under the influence of an external magnetic field.

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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: q-fin
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th
1
The categories of this paper are: cs
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The categories of this paper are: ao-sci
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
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The categories of this paper are: alg-geom
3
The categories of this paper are: physics
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The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th