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pro vyhledávání: '"P. Selivanov"'
We report the observation of the electro-optic effect in Bi$_2$Se$_3$ crystals induced by an intense single-cycle terahertz pulse. The effect reveals itself as a transient change of the polarization state of a femtosecond laser pulse reflected from t
Externí odkaz:
http://arxiv.org/abs/2410.20277
Autor:
Podolskii, Vladimir, Selivanov, Victor
Publikováno v:
EPTCS 407, 2024, pp. 186-197
It is known that the Wadge reducibility of regular $\omega$-languages is efficiently decidable (Krishnan et al., 1995), (Wilke, Yoo, 1995). In this paper we study analogous problem for regular k-partitions of $\omega$-languages. In the series of prev
Externí odkaz:
http://arxiv.org/abs/2409.06977
Autor:
Selivanov, Y. V., Fedotov, A. M.
We consider a generalized Heitler model for QED cascade. An exact formula for the final number of leptons is obtained by solving the kinetic equations. We demonstrate that in such a model the final number of leptons does not depend on photon and lept
Externí odkaz:
http://arxiv.org/abs/2408.06466
Autor:
Despirak, Irina, Setsko, Pavel, Lubchich, Andris, Hajra, Rajkumar, Sakharov, Yaroslav, Lakhina, Gurbax, Selivanov, Vasiliy, Tsurutani, Bruce Tsatnam
We analyzed intense geomagnetically induced currents (GICs) recorded during a complex space weather event observed on 23-24 April 2023. Two geomagnetic storms characterized by SYM/H intensities of -179 nT and -233 nT was caused by southward IMG Bz of
Externí odkaz:
http://arxiv.org/abs/2312.15976
Autor:
Kozlov, V. O., Selivanov, N. I., Stoumpos, C. C., Kozlov, G. G., Zapasskii, V. S., Kapitonov, Yu. V., Smirnov, D. S., Ryzhov, I. I.
We report on first observation of spin noise in a strongly birefringent semiconductor -- halide perovskite single crystal MAPbI$_3$. The observed spin noise resonance is ascribed to free holes with a record spin dephasing time of 4 ns. The spin dynam
Externí odkaz:
http://arxiv.org/abs/2311.06077
Autor:
O., Cheremnykh, A., Fedorenko, A., Voitsekhovska, Yu., Selivanov, I., Ballai, G., Verth, V, Fedun
The perturbations from the solar terminator in the range of acoustic-gravity waves (AGWs) periods from 5 minutes to 1 hour were analysed with the use of measurements of VLF radio signals amplitudes on the European radio path GQD--A118 (Great Britain-
Externí odkaz:
http://arxiv.org/abs/2310.05961
Publikováno v:
Phys. Rev. B 108, 224309 (2023)
We investigate the ultrafast optical response of PbTe to an intense single-cycle terahertz pulse, resonant with the soft transverse optical (TO) phonon mode of the crystal. We detect multifrequency oscillations of the reflectance anisotropy, which we
Externí odkaz:
http://arxiv.org/abs/2309.06549
Autor:
Shumitskaya, Anastasia A., Kozlov, Vadim O., Selivanov, Nikita. I., Stoumpos, Constantinos C., Zapasskii, Valery S., Kapitonov, Yury V., Ryzhov, Ivan I.
The spin degree of freedom of charge carriers in halide-perovskite semiconductors can be highly useful for information photonics applications. The Faraday effect is known to be the best indicator of paramagnetism of the material and of the spin-light
Externí odkaz:
http://arxiv.org/abs/2309.03125
Publikováno v:
Solar-Terrestrial Physics, Vol 10, Iss 3, Pp 137-146 (2024)
We analyze variations in geomagnetically induced currents (GIC) and pulsations of the geomagnetic field latitudinal By component in the frequency range 1–20 mHz. The analysis is based on the data from GIC registration at the Kola Peninsula and magn
Externí odkaz:
https://doaj.org/article/0af7717d2ce04f4a9dcd3e419ff3fc22
Autor:
Selivanov, Anton, Fridman, Emilia
We consider a simply-supported Euler-Bernoulli beam with viscous and Kelvin--Voigt damping. Our objective is to attenuate the effect of an unknown distributed disturbance using one piezoelectric actuator. We show how to design a suitable $H_\infty$ s
Externí odkaz:
http://arxiv.org/abs/2308.05551