Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coexistence of parallel and series current paths in parallel-coupled
  double quantum dots in nonlinear transport regime   We investigated the electron transport properties of parallel-coupled double
quantum dot (DQD) devices under magnetic fields. When a low magnetic field was
applied, electron tunneling through parallel-coupled DQDs was observed. Under a
high magnetic field, we observed both electron tunneling through parallel- and
series-coupled DQDs under nonlinear transport conditions. In addition, the
Pauli spin blockade was observed, indicating tunneling through the
series-coupled DQDs. We attribute these behaviors to the magnetic-field-induced
changes in the tunnel-couplings that allow the coexistence of the current paths
of the parallel and series configurations.

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The categories of this paper are: solv-int
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The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: econ
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: stat
1
The categories of this paper are: cs
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The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat