Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A quantum circuit rule for interference effects in single-molecule
  electrical junctions   A quantum circuit rule for combining quantum interference (QI) effects in the
conductive properties of oligo(phenyleneethynylene) (OPE)-type molecules
possessing three aromatic rings was investigated both experimentally and
theoretically. Molecules were of the type X-Y-X, where X represents pyridyl
anchors with para (p), meta (m) or ortho (o) connectivities and Y represents a
phenyl ring with p and m connectivities. The conductances GXmX (GXpX) of
molecules of the form X-m-X (X-p-X), with meta (para) connections in the
central ring were predominantly lower (higher), irrespective of the meta, para,
or ortho nature of the anchor groups X, demonstrating that conductance is
dominated by the nature of QI in the central ring Y. The single-molecule
conductances were found to satisfy the quantum circuit rule Gppp/Gpmp =
Gmpm/Gmmm. This demonstrates that the contribution to the conductance from the
central ring is independent of the para versus meta nature of the anchor
groups.

18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom