Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generalization of Blonder-Tinkham-Klapwijk theory to particle-hole
  mixing boundary conditions: \pi-shift and conductance dips   We generalize the Blonder-Tinkham-Klapwijk theory considering non-diagonal
boundary conditions in the Bogoliubov-de Gennes scattering problem, to describe
anomalous conductance features often reported for normal-metal/superconductor
contacts. We calculate the differential conductance spectra showing that
conductance dips, not expected in the standard formulation, are explained in
terms of phase \pi-shift, between the bulk and the interface order parameter,
possibly induced by a localized magnetic moment. A discretized model is used to
give quantitative evaluation of the physical conditions, namely the
polarization and transparency of the interface, needed to realize the phase
gradient.

1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
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The categories of this paper are: q-fin
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The categories of this paper are: stat
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph