Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Ivan V. Ignatiev"'
Autor:
V. A. Lovtcius, Yu. P. Efimov, A. S. Kurdyubov, A. V. Trifonov, Ivan V. Ignatiev, A. V. Mikhailov, B. F. Gribakin, S. A. Eliseev
Publikováno v:
Semiconductors. 54:1514-1517
The energy spectrum of the exciton and carrier states in a shallow GaAs/AlGaAs quantum well is experimentally studied by means of the spectroscopy of the nonradiative broadening of exciton resonances and the spectroscopy of the photoluminescence exci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::308d113f4ee0a4fcdc15e66a62f727f1
https://doi.org/10.1134/s1063782620110172
https://doi.org/10.1134/s1063782620110172
Publikováno v:
Physical Review B. 104
Wave functions of heavy-hole excitons in GaAs/Al$_{0.3}$Ga$_{0.7}$As square quantum wells (QWs) of various widths are calculated by the direct numerical solution of a three-dimensional Schr\"odinger equation using a finite-difference scheme. These wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d834e5244e7bc2ee2fa755ef42eedd1
https://doi.org/10.1103/physrevb.104.205302
https://doi.org/10.1103/physrevb.104.205302
Autor:
A. S. Kurdyubov, Alexey Kavokin, P. S. Grigoryev, A. V. Trifonov, Ivan V. Ignatiev, Manfred Bayer, V. A. Lovtcius, A. V. Mikhailov, B. F. Gribakin, I. Ya. Gerlovin, Yu. P. Efimov, Marc Aßmann, S. A. Eliseev
Publikováno v:
Physical Review B. 104
Optically inactive or dark excitons play an important role in exciton and polariton devices. On one hand, they supply excitons to the light cone and feed the photoluminescence signal. On the other hand, they repel radiatively active excitons due to t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02d82d289e06c53fdbdb1ac4812cc5a2
https://doi.org/10.1103/physrevb.104.035414
https://doi.org/10.1103/physrevb.104.035414
Publikováno v:
Semiconductors. 54:1503-1505
In this work, we study the exchange interactions between two excitons in the GaAs/AlGaAs quantum wells of various widths. We numerically solved the Schrodinger equation for an exciton in a quantum well to find the two-exciton wave functions and to ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::808bb386674e710d80606ed0457ecc93
https://doi.org/10.1134/s1063782620110135
https://doi.org/10.1134/s1063782620110135
Autor:
K. V. Kavokin, Alexey Kavokin, Ivan V. Ignatiev, S. A. Eliseev, A. V. Trifonov, V. A. Lovtcius, P. Yu. Shapochkin, Yu. P. Efimov
Publikováno v:
Semiconductors. 53:1170-1174
Mechanisms of the suppression of the electron-hole exchange interaction in nonradiative excitons with a large in-plane wave vector in high-quality heterostructures with quantum wells are analyzed theoretically. It is shown that the dominant suppressi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d96f672298fd7b04360a788a11f4a59
https://doi.org/10.1134/s1063782619090239
https://doi.org/10.1134/s1063782619090239
Autor:
V. G. Davydov, D. K. Loginov, Ivan V. Ignatiev, Alexey Kavokin, Yasuaki Masumoto, Pavel A. Belov, I. Ya. Gerlovin
Publikováno v:
Physical Review Research. 2
Linear in the wave-vector terms of an electron Hamiltonian play an important role in topological insulators and spintronic devices. Here we demonstrate how an external electric field controls the magnitude of a linear-in-K term in the exciton Hamilto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f07affd29079732358c9a930401566ab
https://doi.org/10.1103/physrevresearch.2.033510
https://doi.org/10.1103/physrevresearch.2.033510
Autor:
Ivan V. Ignatiev, Yu. P. Efimov, P. Yu. Shapochkin, V. A. Lovtcius, A. V. Trifonov, S. A. Eliseev
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 81:1481-1484
Reflectance spectroscopy is used to study exciton scattering caused by phonons, nonradiative excitons, and free carriers in a heterostructure with a wide (In,Ga)As/GaAs quantum well. Nonradiative excitons and free carriers are created via additional
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a67ad087ca8a604f8dd012287e393e54
https://doi.org/10.3103/s1062873817120292
https://doi.org/10.3103/s1062873817120292
Publikováno v:
Physics of the Solid State. 59:1298-1301
The influence of optical illumination on transmission of THz radiation through a bulk crystal of semi-insulating GaAs is experimentally studied. It is established that, without additional illumination, absorption of electromagnetic waves with a frequ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d08424abaf7c6a7480336c9613ee6644
https://doi.org/10.1134/s1063783417070125
https://doi.org/10.1134/s1063783417070125
Autor:
V. A. Lovtcius, Yu. P. Efimov, E. S. Khramtsov, P. Yu. Shapochkin, P. S. Grigoryev, S. A. Eliseev, Ivan V. Ignatiev
Publikováno v:
Physical Review Applied. 12
Excitons as a physical phenomenon have been crying out for application since their discovery, but their subtle nature is a drawback here. Small binding energies restrict the existence of excitons at room temperature, and these quasiparticles are far
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65541b178ac8a31624e10fe9267e597f
https://doi.org/10.1103/physrevapplied.12.034034
https://doi.org/10.1103/physrevapplied.12.034034
Autor:
Yu. P. Efimov, E. L. Ivchenko, D. K. Loginov, Ivan V. Ignatiev, E. S. Khramtsov, S. A. Eliseev, Manfred Bayer, P. Yu. Shapochkin, P. S. Grigoryev
Publikováno v:
Physical Review B. 99
Optical spectroscopy of resonant reflection has been used for both experimental and theoretical studies of the exciton-light interaction in wide, high-quality quantum-well structures with the widths exceeding the exciton Bohr radius by an order of ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fefb973d1fc6713d5be0c10c3ca709ce
https://doi.org/10.1103/physrevb.99.035431
https://doi.org/10.1103/physrevb.99.035431