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: | , , |
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Format: | Article |
Language: | English |
Published: |
American Physical Society
2021-10-01
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Series: | Physical Review Research |
Online Access: | http://doi.org/10.1103/PhysRevResearch.3.043016 |