Персона: Кузнецов, Илья Олегович
Загружается...
Email Address
Birth Date
Научные группы
Организационные подразделения
Организационная единица
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.
Статус
Фамилия
Кузнецов
Имя
Илья Олегович
Имя
4 results
Результаты поиска
Теперь показываю 1 - 4 из 4
- ПубликацияТолько метаданныеStages of the Excitation Relaxation in a Superconductor after the Impact of a Femtosecond Laser Pulse Taking into Account the Momentum Distribution of Quasiparticles(2019) Kartsev, P. F.; Kuznetsov, I. O.; Карцев, Петр Федорович; Кузнецов, Илья Олегович© 2019, Pleiades Publishing, Ltd.A theoretical model is formulated for the description of the nonequilibrium state of a superconductor on the basis of the nonequilibrium distribution function of phonons and quasiparticles on a finite momentum lattice convenient for numerical simulation. The simulation is performed under conditions of pulsed optical impact demonstrating the role of excess quasiparticles in suppressing the order parameter and the main stages of the relaxation process in the absence of electric current.
- ПубликацияТолько метаданныеEffect of transport current on suppression of superconductivity with ultrashort laser pulse(2021) Kartsev, P. F.; Kuznetsov, I. O.; Карцев, Петр Федорович; Кузнецов, Илья Олегович© 2021 IOP Publishing Ltd.We study the suppression of superconductivity with ultrashort laser pulse in the presence of transport current. The theoretical model is based on the Bardeen-Cooper-Schrieffer relations for the superconducting state coupled with kinetic equations for nonequilibrium Bogoliubov quasiparticles and phonons. The results of numerical simulation for picosecond and femtosecond laser pulses of optical and infrared ranges are given. We discuss the effects of main problem parameters, including the current density.
- ПубликацияТолько метаданныеNumerical simulation of suppression of superconductivity with ultrashort laser pulse(2022) Kuznetsov, I.; Kartsev, P.; Кузнецов, Илья Олегович; Карцев, Петр ФедоровичIEEEWe study the problem of switching the superconductor to normal state with ultrashort laser pulse. We use original theoretical model based on kinetic equation for nonequilibrium Bogoliubov quasiparticles and phonons coupled with BCS theory relations for superconducting order parameter. Numerical simulation of the model allows to obtain the general behavior of excess particles and superconducting energy gap, and shows the characteristic features of the relaxation processes observed in experiment. In this work, we investigate the gap suppression in a superconductor excited with ultrashort laser pulse, and show the effects of laser frequency and transport current density on the duration of the process.
- ПубликацияОткрытый доступMethod and computer library for calculation of the Boltzmann collision integrals on discrete momentum lattice(2023) Kuznetsov, I. O.; Kartsev, P. F.; Кузнецов, Илья Олегович; Карцев, Петр Федорович