?
Технологическое устройство для рентгенолитографии высокого разрешения
С. 244–245.
Ефимов И. А., Корпачев М. Ю., Костомаров П. С., Лучников П. А.
Language:
Russian
In book
Ч. 2. , М.: Энергоатомиздат, 2009.
Lyskova N., Churazov E., Khabibullin I. et al., Astronomy and Astrophysics 2025 Vol. 702 Article A175
We use a subsample of co-detections of the ACT and MaDCoWS cluster catalogs to verify the predicted relation between the observed X-ray flux FX in the 0.5−2 keV band and the cluster mass M500c for halos at z > 0.6 − 0.7. We modified this relation by introducing a correction coefficient, η, which is supposed to encapsulate factors associated with a particular method of flux ...
Added: March 6, 2026
Adamov R. B., Melentev G. A., Podoskin A. A. et al., St. Petersburg Polytechnical University Journal: Physics and Mathematics 2024 Vol. 17 No. 1.1 P. 68–76
Comprehensive studies of the luminescence of p–i–n structures with 10 compensated GaAs/AlGaAs quantum wells have been performed. The studies were carried out in the terahertz (THz) and near-infrared (NIR) spectral ranges with both optical and electrical pumping of nonequilibrium charge carriers. The THz photoluminescence spectra revealed an emission line caused by electron transitions from the first size-quantization ...
Added: August 27, 2024
Адамов Р. Б., Мелентьев Г. А., Подоскин А. А. et al., Физика и техника полупроводников 2023 Т. 57 № 8 С. 663–673
Исследованы фото- и электролюминесценция в p-i-n-структурах с компенсированными квантовыми ямами GaAs/AlGaAs с различными профилями легирования: с пространственным разделением доноров и акцепторов (доноры локализованы в квантовых ямах, акцепторы - в барьерах) и без него (и доноры, и акцепторы локализованы в квантовых ямах). Изучались спектральные характеристики люминесценции в ближнем ИК диапазоне при гелиевых температурах. Выявлены линии излучательной ...
Added: February 5, 2024
S. A. Prokhorenko, S. Yu. Sazonov, Gilfanov M. R. et al., Monthly Notices of the Royal Astronomical Society 2024 Vol. 528 No. 4 P. 5972–5989
We examine the long-term (rest-frame time scales from a few months to ∼20 years) X-ray variability of a sample of 2344 X-ray bright quasars from the SDSS DR14Q Catalogue, based on the data of the SRG/eROSITA All-Sky Survey complemented for ∼7% of the sample by archival data from the XMM-Newton Serendipitous Source Catalogue. We characterise variability by a structure ...
Added: February 1, 2024
Adamov R. B., Melentev G. A., Sedova I. V. et al., Journal of Luminescence 2024 Vol. 266 Article 120302
Terahertz (THz) luminescence in doped nanostructures with GaAs/AlGaAs quantum wells is studied under conditions of interband optical pumping. The study is carried out on compensated quantum wells with different doping profiles. In one structure, compensation is carried out directly in each quantum well by introducing donors and acceptors with the same concentration. In the other, ...
Added: November 12, 2023
Nikolaev I., Kazakov A., Drozdov K. et al., Journal of Applied Physics 2022 Vol. 132 No. 23 Article 234301
We report a detailed study of the bipolar persistent photoconductivity in an HgTe/CdHgTe double quantum well (DQW), which can be a perspective for studying topological states in these structures. Photoconductivity spectra measurements in the range of 1.1–3.1 eV as well as transport measurements under different illumination conditions were performed at T = 4.2 K. Based on the results, the processes ...
Added: June 7, 2023
Zhukov A., Bessonov I. V., Bobrova E. et al., Нанотехнологии в строительстве: научный интернет-журнал 2021 Vol. 13 No. 3 P. 144–149
ABSTRACT: Introduction. The use of gypsum in construction systems exposed to atmospheric influences involves the introduction of modifying additives of various types: polymer compositions, mineral fine and nanodisperse components, which can also be products of other industries. Methods and materials. To increase the weather resistance of gypsum stone, its strength characteristics and water resistance, the research ...
Added: March 20, 2023
Vinnichenko M., Makhov I., Panevin V. et al., , in: Proceedings of the 9th International Symposium OPTICS-2022.: Springer, 2022. Ch. 7 P. 79–90.
The present work is devoted to the experimental investigation of the far-, mid- and near-infrared photoconductivity related to the optical hole transitions involving acceptor states in GaAs/AlGaAs quantum wells.Photoconductivity spectra are studied at low lattice temperatures.It is shown that the main contribution to the far- and mid-infrared photoconductivity is associated with the optical hole transitions ...
Added: November 7, 2022
Firsov D., Makhov I., Panevin V. et al., , in: Proceedings of the 9th International Symposium OPTICS-2022.: Springer, 2022. Ch. 2 P. 21–38.
A review of the results of studies of terahertz radiation associated with impurity electron transitions in n-doped GaAs/AlGaAs quantum wells under conditions of interband optical excitation of nonequilibrium charge carriers is presented.The principles of radiation generation and methods of controlling its intensity are described: a decrease in the lifetime of electrons at impurity levels due ...
Added: November 7, 2022
Vinnichenko M. Y., Makhov I., Kharin N. Y. et al., Semiconductors 2022 Vol. 55 No. 9 P. 710–716
The low-temperature impurity-assisted photoconductivity and absorption spectra of a nanostructure
with acceptor-doped multiple GaAs/AlGaAs quantum wells are investigated. The experimental absorption
and photoconductivity spectra agree well with each other. Using the calculated energy spectrum of the
hole and acceptor states in the quantum wells, the contributions of the transitions of holes from the ground
acceptor state to the delocalized ...
Added: March 14, 2022
Nadtochiy A., Gordeev N., Kharchenko A. et al., Journal of Lightwave Technology 2021 Vol. 39 No. 23 P. 7479–7485
Modal absorptions in laser-like heterostructures containing
InAs self-assembled quantum dots (QDs) and InGaAs
quantum well-dots (QWDs) have been studied. The evaluation
of photoresponse as a function of waveguide length has allowed
us to determine per-layer modal absorptions of 69 and 13 cm-1
for the ground state optical transitions of QWDs and QDs, respectively.
The values of the modal absorption can be ...
Added: November 28, 2021
Budkin G. V., Makhov I. S., Firsov D. A., Journal of Physics: Condensed Matter 2021 Vol. 33 No. 16 Article 165301
The flow of electric current in quantum well breaks the space inversion symmetry, which leads to the dependence of the radiation transmission on the relative orientation of current and photon wave vector, this phenomenon can be named current drag of photons. We have developed a microscopic theory of such an effect for intersubband transitions in ...
Added: October 8, 2021
Максимов М. В., Zhukov A., Письма в Журнал технической физики 2019 Т. 45 № 11 С. 20–23
InGaAs/InGaAlAs laser diodes operating in the 1.55-μm spectral range are studied. It is demonstrated
that a certain level of carbon doping (1012 cm–2 per a single quantum well) allows one to reduce the
temperature coefficient of variation of the lasing wavelength in such structures and raise the characteristic
temperature of threshold current and differential efficiency at temperatures from ...
Added: March 16, 2021
Moiseev E., Максимов М. В., Kryzhanovskaya N. et al., Физика и техника полупроводников 2020 Т. 54 № 2 С. 212–216
The results are presented on a comparative analysis of spectral and threshold characteristics of diode microdisk lasers operating at room temperature in a spectral range of 1.2xx µm with different active regions: InGaAsN/GaAs quantum wells or InAs/InGaAs/GaAs quantum dots. It was found that microlasers of a comparable size with quantum wells have higher lasing threshold ...
Added: September 30, 2020
Ю.Е. Лозовик, Успехи физических наук 2018 Т. 188 № 11 С. 1203–1208
Рассматриваются новые эффекты в системах квантовых диполей: анизотропная сверхтекучесть во внешних полях, эффекты сильных корреляций и кристаллизация, фаза суперсолида. Анализируются эффекты ротонной неустойчивости, типичные для сильно коррелированных бозе-систем, но проявляющиеся в слабо взаимодействующей системе наклонных диполей. Интересными физическими реализациями рассматриваемых систем являются дипольные экситоны в связанных квантовых ямах либо в одиночной квантовой яме в сильном ...
Added: October 22, 2018
Yu. E. Lozovik, I. L. K., Pavel A. V., Physical Review B: Condensed Matter and Materials Physics 2017 Vol. 95 No. 24-5430 P. 245430-1–245430-19
We study anisotropies of the helicity modulus, excitation spectrum, sound velocity, and angle-resolved luminescence spectrum in a two-dimensional system of interacting excitons in a periodic potential. Analytical expressions for anisotropic corrections to the quantities characterizing superfluidity are obtained. We consider particularly the case of dipolar excitons in quantum wells. For GaAs/AlGaAs heterostructures as well as ...
Added: October 22, 2017
Likhachev I. A., Subbotin I. A., Prutskov G. V. et al., , in: First AfLS Conference and Workshop 2015. Book of abstracts.: [б.и.], 2015. P. 23–23.
A complementary approach for studying multilayer heterostructes with X-Ray investigation methods was represented. Approach examination was conducted by analysis XRR and HRXRD data for the δ-Mn/InGaAs/GaAs heterostructure and series of XRR experiments with a different wavelengths for the Fe/Cr/Gd/Cr superlattice. ...
Added: June 17, 2016
Prutskov G. V., Rogachev A., Terevtyev A. V., В кн.: Научно-техническая конференция студентов, аспирантов и молодых специалистов НИУ ВШЭ им. Е.В. Арменского. Материалы конференции.: М.: МИЭМ НИУ ВШЭ, 2016. С. 284–284.
В работе показаны результаты структурных исследований гетерокомпозиций Si/EuO/cap-layer, при помощи совместной обработки результатов рентгеновской дифракции и рефлектометрии. Получены профили распределения компонент поляризуемости для образцов по глубине. ...
Added: June 17, 2016
Rogachev A., Prutskov G. V., В кн.: Научно-техническая конференция студентов, аспирантов и молодых специалистов НИУ ВШЭ им. Е.В. Арменского. Материалы конференции.: М.: МИЭМ НИУ ВШЭ, 2015. С. 250–250.
В работе описаны особенности проведения исследования органических образцов, сформированных на поверхности жидкости, методами абсорбционной спектроскопии с применением синхротронного излучения. Представлены первые экспериментальные данные. ...
Added: July 22, 2015
Prutskov G. V., Лихачев И. А., В кн.: Сборник аннотаций национальной молодежной научной школы для молодых ученых, аспирантов и студентов по современным методам исследования наносистем и материалов "Синхротронные и нейтронные исследования" (СИН НАНО 2015), г. Москва, 6 - 10 июля 2015 г.: М.: НИЦ «Курчатовский институт», 2015. С. 105–106.
В работе описан подход комплексного обсчета данных рентгеновской дифракции и рефлектометрии для структур спинтроники. ...
Added: July 13, 2015
М.: НИЦ «Курчатовский институт», 2015.
Сборник содержит аннотации докладов, преставленных участниками национальной молодежной научной школы для молодых ученых, аспирантов и студентов по современным методам исследований наносистем и материалов "Синхротронные и нейтронные исследования". Материалы представлены в авторской редакции. ...
Added: July 13, 2015
Novikov L., Voronina E. N., Chirskaya N. P., Inorganic Materials: Applied Research 2014 Vol. 4 No. 2 P. 107–115
Features of formation and migration of radiation-induced defects in carbon nanotubes (CNT) and nanostructured materials are examined. The main methods and software tools used for the simulating nanomaterial structure and space factors are described. The results of mathematical simulation are presented. ...
Added: March 2, 2015
Voronina E. N., Lev S. Novikov, RSC advances 2013 Vol. 3 No. 35 P. 15362–15367
We apply first principles calculations to compare the carbon and boron nitride nanotube unzipping under atomic oxygen impact. We show that the attack of several oxygen atoms can cause bond breaking in nanotubes, but the structure of boron nitride nanotubes is less damaged than the structure of carbon ones. With increasing diameter, the structural damage ...
Added: March 2, 2015