Zobrazeno 1 - 10
of 214
pro vyhledávání: '"Berman, Oleg L."'
Publikováno v:
Nanomaterials 2022, 12(9), 1437
We predict Bose-Einstein condensation and superfluidity of dipolar excitons, formed by electron-hole pairs in spatially separated gapped hexagonal $\alpha-T_{3}$ (GHAT3) layers. In the $\alpha-T_{3}$ model, the AB-honeycomb lattice structure is suppl
Externí odkaz:
http://arxiv.org/abs/2409.03125
We have theoretically investigated the spin- and valley-dependent superfluidity properties of indirect momentum space dark dipolar excitons in double layers with massive anisotropic tilted semi-Dirac bands in the presence of circularly polarized irra
Externí odkaz:
http://arxiv.org/abs/2401.12154
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 nanoribbon of transition metal dichalcogenides (TMDCs), such as MoSe$
Externí odkaz:
http://arxiv.org/abs/2210.07969
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 ($O$ point) in the ($k_x,k_y$) plane of a small cubic region can be adjusted b
Externí odkaz:
http://arxiv.org/abs/2206.06438
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 Hamiltonian for two qubits coupled to a single cavity mode have been ca
Externí odkaz:
http://arxiv.org/abs/2112.03064
Recently discussed topological materials Weyl-semimetals (WSs) combine both: high electron mobility comparable with graphene and unique topological protection of Dirac points. We present novel results related to electromagnetic field propagation thro
Externí odkaz:
http://arxiv.org/abs/2006.03625
Publikováno v:
Phys. Rev. B 102, 155408 (2020)
We predict the occurrence of Bose-Einstein condensation and superfluidity of dipolar magnetoexcitons for a pair of quasi-two-dimensional spatially separated $\alpha$-${\cal T}_3$ layers. We have solved a two-body problem for an electron and a hole fo
Externí odkaz:
http://arxiv.org/abs/2005.03207
Publikováno v:
Scientific Reports 12, 2950 (2022)
We study the effect of a uniform pseudomagnetic field, induced by a strain in a monolayer and double layer of gapped graphene, acting on excitons. For our analysis it is crucial that the pseudomagnetic field acts on the charges of the constituent par
Externí odkaz:
http://arxiv.org/abs/2004.10582
Publikováno v:
Communications Physics 4, 134 (2021)
Throughout the years, strongly correlated coherent states of excitons have been the subject of intense theoretical and experimental studies. This topic has recently boomed due to new emerging quantum materials such as van der Waals (vdW) bound atomic
Externí odkaz:
http://arxiv.org/abs/2002.09988
Publikováno v:
Phys. Rev. B 100, 155433 (2019)
We study the eigenenergies and optical properties of both direct excitons in a phosphorene monolayer in different dielectric environments, and indirect excitons in heterostructures of phosphorene with hexagonal boron nitride. For these systems, we so
Externí odkaz:
http://arxiv.org/abs/1907.11344