Zobrazeno 1 - 10
of 360
pro vyhledávání: '"Rakhmanov, A L"'
Autor:
Azarevich, A. N., Khrykina, O. N., Bolotina, N. B., Gridchina, V. G., Bogach, A. V., Demishev, S. V., Krasnorussky, V. N., Gavrilkin, S. Yu., Tsvetkov, A. Yu., Shitsevalova, N. Yu., Voronov, V. V., Kugel, K. I., Rakhmanov, A. L., Gabani, S., Flachbart, K., Sluchanko, N. E.
The presented studies of resistivity (R), thermal conductivity (k) and specific heat (C) at low temperature 1.8-7 K in magnetic field up to 90 kOe made it possible to detect for the first time the exponential field dependences R(H), 1/k(H), $C(H) \si
Externí odkaz:
http://arxiv.org/abs/2409.04139
Publikováno v:
Physica E 165 116118 (2025)
This work theoretically analyzes electronic ordering in AA-stacked bilayer graphene and the role of the Coulomb interaction in these many-body phenomena. Using the random phase approximation to account for screening, we find intra-layer effective int
Externí odkaz:
http://arxiv.org/abs/2311.07405
Autor:
Akzyanov, R. S., Rakhmanov, A. L.
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures 162, 115980 (2024)
We study the influence of the antiferromagnetic order on the surface states of topological insulators. We derive an effective Hamiltonian for these states, taking into account the spatial structure of the antiferromagnetic order. We obtain a typical
Externí odkaz:
http://arxiv.org/abs/2309.11216
Publikováno v:
Phys. Rev. B 109, 094505 (2024)
We argue that doped twisted bilayer graphene with magical twist angle can become superconducting. In our theoretical scenario, the superconductivity coexists with the spin-density-wave-like ordering. Numerical mean-field analysis demonstrates that th
Externí odkaz:
http://arxiv.org/abs/2309.00346
Publikováno v:
Phys. Rev. B 108, 184503 (2023)
We examine spin density wave and triplet superconductivity as possible ground states of the Bernal bilayer graphene. The spin density wave is stable for the unbiased and undoped bilayer. Both the doping and the applied bias voltage destroy this phase
Externí odkaz:
http://arxiv.org/abs/2306.12312
Publikováno v:
Phys. Rev. B 108, 205153 (2023)
We examine possible ordered states of AA stacked bilayer graphene arising due to electron-electron coupling. We show that under certain assumptions the Hamiltonian of the system possesses an SU(4) symmetry. The multicomponent order parameter is descr
Externí odkaz:
http://arxiv.org/abs/2306.05796
Publikováno v:
Phys. Rev. B 107, 155112 (2023)
We theoretically argue that, in doped AB bilayer graphene, the electron-electron coupling can give rise to the spontaneous formation of fractional metal phases. These states, being generalizations of a more common half-metal, have a Fermi surface tha
Externí odkaz:
http://arxiv.org/abs/2301.02460
Publikováno v:
Phys. Rev. B 107, 134515 (2023)
In the topological superconductor with the nematic superconductivity in $E_u$ representation, it is possible to have different types of vortices. One is associated with the vorticity in the particle-hole space and corresponds to the Abrikosov vortex.
Externí odkaz:
http://arxiv.org/abs/2212.13458
Publikováno v:
JETP Letters 116, 729 (2022)
We examine the coexisting spin and charge density waves as a possible ground state of the magic-angle twisted bilayer graphene. When interactions are not included, the spectrum of the material has 4 (8 if spin is taken into account) almost flat almos
Externí odkaz:
http://arxiv.org/abs/2210.04670
Autor:
Akzyanov, R. S., Rakhmanov, A. L.
We study the physics of the Josephson effect in nematic superconductors with $E_u$ odd parity in the Ginzburg-Landau approach. Two-component vector superconducting order parameter makes this effect rather unusual. We get that the Meissner kernel has
Externí odkaz:
http://arxiv.org/abs/2204.06888