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arXiv · 1706.05469

Majorana-Hubbard model on the square lattice

Ian Affleck·Armin Rahmani·Dmitry Pikulin
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Abstract

We study a tight-binding model of interacting Majorana (Hermitian) modes on a square lattice. The model may have an experimental realization in a superconducting-film--topological-insulator heterostructure in a magnetic field. We find a rich phase diagram, as a function of interaction strength, including a superfluid phase with spontaneous breaking of an emergent $U(1)$ symmetry, separated by a supersymmetric transition from a gapless normal phase.

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Ian Affleck, Armin Rahmani, Dmitry Pikulin. 2017-12-12. Majorana-Hubbard model on the square lattice. https://doi.org/10.1103/physrevb.96.125121

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