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Tuning 2D hyperbolic plasmons in black phosphorus
Edo van Veen, Andrei Nemilentsau, Anshuman Kumar +4
Black phosphorus presents a very anisotropic crystal structure, making it a potential candidate for hyperbolic plasmonics, characterized by a permittivity tensor where one of the p…
Quantum Nanoskyrmions
O. M. Sotnikov, V. V. Mazurenko, J. Colbois +3
Skyrmions in condensed matter physics appear as classical topological spin structures. This nontrivial state can be obtained solving the corresponding micromagnetic model, where th…
Power-law energy level-spacing distributions in fractals
Askar A. Iliasov, Mikhail I. Katsnelson, Shengjun Yuan
In this article we investigate the energy spectrum statistics of fractals at the quantum level. We show that the energy-level distribution of a fractal follows a power-law behaviou…
Two-particle Fermi liquid parameters at the Mott transition: Vertex divergences, Landau parameters, and incoherent response in dynamical mean-field theory
Friedrich Krien, Erik G. C. P. van Loon, Mikhail I. Katsnelson +2
We consider the interaction-driven Mott transition at zero temperature from the viewpoint of microscopic Fermi liquid theory. To this end, we derive an exact expression for the Lan…
Josephson lattice model for phase fluctuations of local pairs in copper-oxide superconductors
Malte Harland, Sergey Brener, Alexander I. Lichtenstein +1
We derive an expression for the effective Josephson coupling from the microscopic Hubbard model. It serves as a starting point for the description of phase fluctuations of local Co…
Spin-torque resonance due to diffusive dynamics at a surface of topological insulator
R. J. Sokolewicz, I. A. Ado, M. I. Katsnelson +2
We investigate spin-orbit torques on magnetization in an insulating ferromagnetic (FM) layer that is brought into a close proximity to a topological insulator (TI). In addition to…