Quantum spin compass models in two-dimensional electronic topological metasurfaces
We consider a metasurface consisting of a square lattice of cylindrical antidots in a two-dimensional topological insulator (2DTI). Each antidot supports a degenerate Kramer's pair of eigenstates formed by the helical topological edge states. We show that the on-site Coulomb repulsion leads to...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
American Physical Society
2021-10-01
|
Series: | Physical Review Research |
Online Access: | http://doi.org/10.1103/PhysRevResearch.3.043016 |
Summary: | We consider a metasurface consisting of a square lattice of cylindrical antidots in a two-dimensional topological insulator (2DTI). Each antidot supports a degenerate Kramer's pair of eigenstates formed by the helical topological edge states. We show that the on-site Coulomb repulsion leads to the onset of the Mott insulator phase in the system in a certain range of experimentally relevant parameters. Intrinsic strong spin-orbit coupling characteristic for the 2DTI supports a rich class of the emerging low-energy spin Hamiltonians that can be emulated in the considered system, which makes it an appealing solid-state platform for quantum simulations of strongly correlated electron systems. |
---|---|
ISSN: | 2643-1564 |