Competition between a band- and a Mott insulator in a chain of Majorana fermions
An array of superconducting islands with semiconducting nanowires in the right
regime provides a macroscopic implementation of Kitaev's toy model for Majorana wires.
We show that a capacitive coupling between adjacent islands leads to an effective
interaction between the Majorana modes. We demonstrate that even though strong repulsive
interaction eventually drive the system into a Mott insulating state the competition
between the (trivial) band-insulator and the (trivial) Mott insulator leads to an
interjacent topological insulating state for arbitrary strong interactions.
iletişim: Inanc Adagideli, email@example.com