Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exchange induced ordinary reflection in a single-channel
  superconductor-ferromagnet-superconductor junction   The stationnary Josephson effect in a clean
Superconductor-Ferromagnet-Superconductor junction is revisited for arbitrarily
large spin polarizations. The quasiclassical calculation of the supercurrent
assumes that the Andreev reflection is complete for all channels. However, De
Jong and Beenakker have shown that the Andreev reflection at a clean FS
interface is incomplete, due to the exchange interaction in the ferromagnet.
Taking into account this incomplete Andreev reflection, we investigate the
quasiparticle spectrum, the Josephson current and the $0-\pi$ transition in a
ballistic single channel SFS junction. We find that energy gaps open in the
phase dependent spectrum. Although the spectrum is strongly modified when the
exchange energy increases, the Josephson current and the $0-\pi$ transition are
only weakly affected by the incomplete Andreev reflection, except when the
exchange energy is close to the Fermi energy.

17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics