Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonequilibrium Josephson effect in mesoscopic ballistic multiterminal
  SNS junctions   We present a detailed study of nonequilibrium Josephson currents and
conductance in ballistic multiterminal SNS-devices. Nonequilibrium is created
by means of quasiparticle injection from a normal reservoir connected to the
normal part of the junction. By applying a voltage at the normal reservoir the
Josephson current can be suppressed or the direction of the current can be
reversed. For a junction longer than the thermal length, $L\gg\xi_T$, the
nonequilibrium current increases linearly with applied voltage, saturating at a
value equal to the equilibrium current of a short junction. The conductance
exhibits a finite bias anomaly around $eV \sim \hbar v_F/L$. For symmetric
injection, the conductance oscillates $2\pi$-periodically with the phase
difference $\phi$ between the superconductors, with position of the minimum
($\phi=0$ or $\pi$) dependent on applied voltage and temperature. For
asymmetric injection, both the nonequilibrium Josephson current and the
conductance becomes $\pi$-periodic in phase difference. Inclusion of barriers
at the NS-interfaces gives rise to a resonant behavior of the total Josephson
current with respect to junction length with a period $\sim \lambda_F$. Both
three and four terminal junctions are studied.

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The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: stat
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
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The categories of this paper are: plasm-ph
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The categories of this paper are: nlin
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The categories of this paper are: q-bio
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The categories of this paper are: alg-geom
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The categories of this paper are: math
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: cs
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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The categories of this paper are: math-ph