4 research outputs found
Electron transport in multiterminal networks of Majorana bound states
We investigate electron transport through multiterminal networks hosting
Majorana bound states (MBS) in the framework of full counting statistics (FCS).
In particular, we apply our general results to T-shaped junctions of two
Majorana nanowires. When the wires are in the topologically nontrivial regime,
three MBS are localized near the outer ends of the wires, while one MBS is
localized near the crossing point, and when the lengths of the wires are finite
adjacent MBS can overlap. We propose a combination of current and
cross-correlation measurements to reveal the predicted coupling of four
Majoranas in a topological T~junction. Interestingly, we show that the
elementary transport processes at the central lead are different compared to
the outer leads, giving rise to characteristic non-local signatures in
electronic transport. We find quantitative agreement between our analytical
model and numerical simulations of a tight-binding model. Using the numerical
simulations, we discuss the effect of weak disorder on the current and the
cross-correlation functions.Comment: 9 pages, 3 figure