90 citations · 1.1k across the 60 of their papers we have counts for
61 papers
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…
Polaritonic and Excitonic Time Crystals based on TMDC strips in an external periodic potential
Gabriel P. Martins, Oleg L. Berman, Godfrey Gumbs
We investigated the dynamics of Bose-Einstein condensates (BECs) under an external periodic potential. We consider two such systems, the first being made of exciton-polaritons in a…
Anisotropic optical conductivities of Model Topological nodal-line Semimetals
Sita Kandel, Godfrey Gumbs, Oleg L. Berman
With the use of simple models, we investigated the optical conductivity of a nodal-line semimetal (NLSM) whose crossing of the conduction and valence bands near the origin ( poi…
Quantum entanglement between excitons in two-dimensional materials
Gabriel P. Martins, Oleg L. Berman, Godfrey Gumbs +1
The quantum entanglement between two excitons in two-dimensional materials, embedded in an optical microcavity, was investigated. The energy eigenstates of a Jaynes-Cummings like H…
Chiral filtration of light by Weyl-semimetal medium
Nikolay M. Chtchelkatchev, Oleg L. Berman, Roman Ya. Kezerashvili +1
Recently discussed topological materials Weyl-semimetals (WSs) combine both: high electron mobility comparable with graphene and unique topological protection of Dirac points. We p…
Superfluidity of dipolar magnetoexcitons in doped double-layered - lattice in a strong magnetic field
Yonatan Abranyos, Oleg L. Berman, Godfrey Gumbs
We predict the occurrence of Bose-Einstein condensation and superfluidity of dipolar magnetoexcitons for a pair of quasi-two-dimensional spatially separated - layers…