Exciton-Polariton Topological Insulator with an Array of Magnetic Dots

M. Sun, D. Ko, D. Leykam, V. M. Kovalev, I. G. Savenko*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Recently, there have been several proposals on exciton-polariton topological insulators, most of which have required strong external magnetic fields induced by bulky superconducting coils. We propose an alternative design for a polariton topological insulator, where excitons are in the proximity of an additional layer of a ferromagnetic material, with a predefined magnetic moment located between the pillars of the cavity. Our design supports a variety of topological phases and transitions between Chern numbers ±2 and ±1 by varying either the magnetic moment of the ferromagnetic material or the spin-orbit coupling between different spin projections, thus enabling compact polariton devices harnessing switchable topological edge modes.

Original languageEnglish
Article number064028
JournalPhysical Review Applied
Issue number6
StatePublished - 11 Dec 2019
Externally publishedYes


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