4 papers · 1 filter
Exploring stable long-lifetime plasmon excitations in the Lieb lattice
Andrii Iurov, Liubov Zhemchuzhna, Godfrey Gumbs +1
The subject of the present paper is a thorough numerical investigation of plasmon expectations, their dispersions and damping within a Lieb lattice. The Lieb lattice is known for i…
Quantum Hall Effect and Chern Phases in the 1/5-Depleted Square Lattice
Sara Aghtouman, Godfrey Gumbs, Mir Vahid Hosseini
We investigate the fractional energy spectrum and quantum Hall response of a two-dimensional 1/5-depleted square lattice subjected to a perpendicular magnetic field. Using a tight-…
Flat bands of TaS under superlattice potential modulation: A Wannier tight-binding model study
Thi-Nga Do, Godfrey Gumbs
In this work, we construct a Wannier tight-binding model for TaS under a superlattice potential modulation, based on the Joint Automated Repository for Various Integrated Simul…
Superfluidity of dipolar excitons in a double layer of with a mass term
Oleg L. Berman, Godfrey Gumbs, Gabriel P. Martins +1
We predict Bose-Einstein condensation and superfluidity of dipolar excitons, formed by electron-hole pairs in spatially separated gapped hexagonal (GHAT3) layers. In the…