@article{ISI:000433025900002,
 abstract = {We study the spectrum of Andreev bound states and Josephson currents
across a junction of N superconducting wires which may have s- or p-wave
pairing symmetries and develop a scattering matrix based formalism which
allows us to address transport across such junctions. For N >= 3, it is
well known that Berry curvature terms contribute to the Josephson
currents; we chart out situations where such terms can have relatively
large effects. For a system of three s-wave or three p-wave
superconductors, we provide analytic expressions for the Andreev
bound-state energies and study the Josephson currents in response to a
constant voltage applied across one of the wires; we find that the
integrated transconductance at zero temperature is quantized to integer
multiples of 4e(2)/h, where e is the electron charge and h = 2
pi(h)over-bar is Planck's constant. For a sinusoidal current with
frequency omega applied across one of the wires in the junction, we find
that Shapiro plateaus appear in the time-averaged voltage < V-1 > across
that wire for any rational fractional multiple (in contrast to only
integer multiples in junctions of two wires) of 2e < V >/((h)over-bar
omega). We also use our formalism to study junctions of two p-wave and
one s-wave wires. We find that the corresponding Andreev bound-state
energies depend on the spin of the Bogoliubov quasiparticles; this
produces a net magnetic moment in such junctions. The time variation of
these magnetic moments may be controlled by an external voltage applied
across the junction. We discuss experiments which may test our theory.},
 article-number = {174518},
 author = {Deb, Oindrila and Sengupta, K. and Sen, Diptiman},
 doi = {10.1103/PhysRevB.97.174518},
 eissn = {2469-9969},
 issn = {2469-9950},
 journal = {PHYSICAL REVIEW B},
 month = {MAY 22},
 number = {17},
 researcherid-numbers = {Deb, Oindrila/AAV-6760-2020},
 times-cited = {6},
 title = {Josephson junctions of multiple superconducting wires},
 unique-id = {ISI:000433025900002},
 volume = {97},
 year = {2018}
}