Персона: Мазур, Евгений Андреевич
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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Мазур
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Евгений Андреевич
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- ПубликацияТолько метаданныеThe influence of strong diagonal disorder on superconductivity in the 2D attractive-U Hubbard model at low electron density(2021) Kagan, M. Y.; Mazur, E. A.; Мазур, Евгений Андреевич© Published under licence by IOP Publishing Ltd.The properties of a two-dimensional low density (n<<1) electron system with strong onsite Hubbard attraction U>W (W is the bandwidth) in the presence of a strong random potential V uniformly distributed in the range from -V to +V are considered. Electronic hoppings only at neighboring sites on the square lattice are taken into account, thus W=8t. The calculations were carried out for a lattice of 24x24 sites with periodic boundary conditions. In the framework of the Bogoliubov - de Gennes approach we observed an appearance of inhomogeneous state of spatially separated Fermi-Bose mixture of Cooper pairs and unpaired electrons with the formation of bosonic droplets of different size in the unpaired fermionic matrix. We observed an increase in the droplet size (from individual bielectronic pairs to larger droplets and finally to the percolation cluster) when we increase the electron density at fixed values of the Hubbard attraction and random potential.
- ПубликацияТолько метаданныеKinetic Phenomena in a Semiconductor Excited by an Oriented Beam of Fast Particles(2022) Mazur, E. A.; Мазур, Евгений Андреевич© 2022, Pleiades Publishing, Ltd.Abstract: It is shown that the passage of channeled particles through a crystal without a center of symmetry or in a magnetic field leads to the appearance of a current, i.e., quasi-photogalvanic and quasi-photomagnetic effects. The theory of these phenomena is developed. The orientation dependence of the quasi-photomagnetic and quasi-photogalvanic currents on the entry angle of a channeled particle with respect to the crystallographic planes is predicted. The dependence of the effect on the state and quantum transitions of a channeled particle is studied. The contribution of matrix elements of the first and second kinds to the quasi-photogalvanic effect is investigated. The intensity of the quasi-photogalvanic current induced by the nondipole radiation of hard photons generated by a high-energy channeled particle is estimated.
- ПубликацияТолько метаданныеDroplets of the Order Parameter in a Low Density Attracting Electron System in the Presence of a Strong Random Potential(2021) Kagan, M. Y.; Mazur, E. A.; Мазур, Евгений Андреевич© 2021, Pleiades Publishing, Inc.Abstract: The properties of a two-dimensional low density (n ≪ 1) electron system with strong onsite Hubbard attraction U > W (W is the bandwidth) in the presence of a strong random potential V uniformly distributed in the range from –V to +V are considered. Electronic hops only at neighboring sites on the square lattice are taken into account, thus W = 8t. The calculations were carried out for a lattice of 24 × 24 sites with periodic boundary conditions. In the framework of the Bogoliubov–de Gennes approach we observed an appearance of inhomogeneous states of spatially separated Fermi–Bose mixture of Cooper pairs and unpaired electrons with the formation of bosonic droplets of different size in the matrix of the unpaired normal states We observed a decrease in the droplet size (from larger droplets to individual bielectronic pairs) when we decrease the electron density at fixed values of the Hubbard attraction and random potential. The obtained results are important for the construction of the gross phase diagram and understanding of the nature of the phase transition between superconducting, normal metallic and localized states in quasi-2D (thin) film of a dirty metal. In a more practical sense it is interesting also for the experimental implementation of superconducting qubits on quantum circuits with high impedances in granular superconductors.
- ПубликацияТолько метаданныеEffects of the Resonant Scattering of Channeled Particles with the Generation of Electron and Phonon Excitations(2023) Mazur, E. A.; Мазур, Евгений Андреевич
- ПубликацияТолько метаданныеFormation of Droplets of the Order Parameter and Superconductivity in Inhomogeneous Fermi–Bose Mixtures (Brief Review)(2023) Kagan, M. Y.; Aksenov, S. V.; Turlapov, A. V.; Ikhsanov, R. Sh.; Mazur, E. A.; Мазур, Евгений Андреевич
- ПубликацияТолько метаданныеOn the Generation of Phonons and Electronic Excitations by a Channeled Particle in Crystals(2024) Mazur, E. A.; Мазур, Евгений Андреевич
- ПубликацияТолько метаданныеSuperconducting and normal properties of the low-dimensional phases of the metallic hydrogen(2021) Ikhsanov, R. Sh.; Kagan, M. Yu.; Mazur, E. A.; Мазур, Евгений Андреевич© 2021 Institute of Physics Publishing. All rights reserved.In the first part of the paper we consider properties of a two-dimensional low density (n = 1) electron system with strong onsite Hubbard attraction U ≥ W (W is the bandwidth) in the presence of a strong random potential V uniformly distributed in the range from -V to +V. In the framework of the Bogoliubov-de Gennes approach we observed an appearance of inhomogeneous state of spatially separated Fermi-Bose mixture of Cooper pairs and unpaired electrons with the formation of bosonic droplets of different size in the unpaired fermionic matrix. Software package to solve the system of Eliashberg equations that describes the transition of a metal to a superconducting state is presented. We use a version of the Eliashberg system of equations written on the imaginary axis. The system is presented in two versions: without taking into account the corrections for the chemical potential of electrons and with taking them into account. The calculations were performed for the I41/amd phase of metallic hydrogen at a pressure of 500 GPa.