Quantum spin compass models in two-dimensional electronic topological metasurfaces

F. O. Nigmatulin, I. A. Shelykh, I. V. Iorsh

Rannsóknarafurð: Framlag til fræðitímaritsGreinritrýni


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.

Upprunalegt tungumálEnska
Númer greinar043016
FræðitímaritPhysical Review Research
Númer tölublaðs4
ÚtgáfustaðaÚtgefið - des. 2021


Funding Information:
The authors acknowledge the support of Russian Science Foundation Grant No. 20-12-00224.

Publisher Copyright:
© 2021 Published by the American Physical Society


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