Strongly interacting Majorana modes in an array of Josephson junctions

Autor: Fabian Hassler, Dirk Schuricht
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: New Journal of Physics, Vol 14, Iss 12, p 125018 (2012)
Druh dokumentu: article
ISSN: 1367-2630
DOI: 10.1088/1367-2630/14/12/125018
Popis: 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 drives 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.
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