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of 286
pro vyhledávání: '"Kopec, T."'
Autor:
Apinyan, V., Kopec, T. K.
Publikováno v:
Phys. Rev. B, 105, 184503 (2022)
In this paper, the effects of the external transverse magnetic field $B$ (perpendicular to the surface of the layers) on the electronic and excitonic properties are studied in the AA-stacked bilayer graphene (BLG). The effects of the Coulomb interact
Externí odkaz:
http://arxiv.org/abs/2205.08568
Autor:
Apinyan, V., Kopeć, T. K.
Publikováno v:
Journal of Low Temperature Physics, 194, 325-359 (2019)
We have considered the AB-stacked bilayer graphene Josephson junction. The bilayers are supposed to be in the charge equilibrium states and at the half-filling in each of the electronic layers of the construction and at each value of the external gat
Externí odkaz:
http://arxiv.org/abs/2201.09733
Autor:
Apinyan, V., Kopeć, T. K.
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures, 115, 113682 (2020)
In the present work, we consider the excitonic effects in the twisted bilayer graphene (tBLG) within the rotated bilayer Hubbard model. Both, intralayer and interlayer Coulomb interactions have been considered and the half-filling condition is impose
Externí odkaz:
http://arxiv.org/abs/2201.09732
Autor:
Apinyan, V., Kopec, T. K.
Publikováno v:
Phys. Rev. B, vol. 104, 2021, 075426
In the present paper, we describe the antiferromagnetic and excitonic correlations in the AA-stacked bilayer graphene. We consider the applied external electric field potential to the structure which leads to the electronic charge imbalance between t
Externí odkaz:
http://arxiv.org/abs/2112.08115
Autor:
Apinyan, V., Kopec, T. K.
Publikováno v:
Physica E, Low-dimensional systems and Nanostructures, vol. 124, 2020, 114234
We consider the excitonic effects on the thermal properties in the AB-stacked bilayer graphene. The calculations are based on the bilayer generalization of the usual Hubbard model at the half-filling. The full interaction bandwidth is used without an
Externí odkaz:
http://arxiv.org/abs/2112.08938
Autor:
Apinyan, V., Kopec, T. K.
Publikováno v:
Superlattices and Microstructures, vol. 119, 2018, 166-180
We consider the optical properties of the half-filled AB-stacked bilayer graphene with the excitonic pairing and condensation between the layers. Both intra and interlayer local Coulomb interaction effects have been taken into account and the role of
Externí odkaz:
http://arxiv.org/abs/2112.07371
Akademický článek
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Autor:
Apinyan, V., Kopeć, T. K.
We calculate theoretically the optical conductivity in the bilayer graphene by considering Kubo-Green-Matsubara formalism. Different regimes of the interlayer coupling parameter have been considered in the paper. We show that the excitonic effects su
Externí odkaz:
http://arxiv.org/abs/1810.08410
Autor:
Piekarska, A. M., Kopeć, T. K.
Publikováno v:
Phys. Rev. Lett. 120, 160401 (2018)
We study disordered interacting bosons described by the Bose-Hubbard model with Gaussian-distributed random tunneling amplitudes. It is shown that the off-diagonal disorder induces a spin-glass-like ground state, characterized by randomly frozen quan
Externí odkaz:
http://arxiv.org/abs/1803.08156
Autor:
Apinyan, V., Kopeć, T. K.
Publikováno v:
Physica E 95 (2018) 108
In this paper, we consider the spectral properties of the bilayer graphene with the local excitonic pairing interaction between the electrons and holes. We consider the generalized Hubbard model, which includes both intralayer and interlayer Coulomb
Externí odkaz:
http://arxiv.org/abs/1712.07681