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Фотоэмиссия свободных носителей заряда в высокоомный полупроводник при освещении омических контактов
С. 220-222.
Lysenko A. P., Grigoryev F. I., Strogankova N. I., Golubiatnikov V. A., Шадов М. Б.
The photoemission of free charge carriers into high-ohmic semiconductor created by light illumination of near-contact-area of ohmic contacts to cadmium telluride sample was investigated. It was revealed, that near-contact-area light illumination influences both on contact transition resistance and on volume conductivity of the crystal due to increasing of main charge carrier concentration. The method of separate determination of contact transition and sample volume resistances, suitable for high-ohmic semiconductors, was suggested.
In book
М. : МИЭМ НИУ ВШЭ, 2013
Lysenko A. P., Golubiatnikov V. A., Strogankova N. I. et al., Известия высших учебных заведений. Электроника 2015 Т. 20 № 2 С. 174-181
The influence of the illumination of the n-type semi-insulating gallium ar-senide sample central part upon the sample conductivity has been investigated. The luxe-ampere dependence beginning from some light intensity has been shown to become linear, and its angular coefficient increased with illuminated area diameter increasing. This dependence has been described by the degree function between ...
Added: November 4, 2014
Lysenko A. P., Белов А. Г., Каневский В. Е. et al., Известия высших учебных заведений. Физика 2017 Т. 60 № 12 С. 142-149
The phenomenon of photoconductivity has long been well studied. However, in the overwhelming majority of studies, the photoconductivity of semiconductors was studied by illuminating the entire surface of the samples. In this paper we investigated the effect of local illumination, which ensures a high level of injection of free charge carriers on the conductivity of ...
Added: December 25, 2017
IEEE, 2022
International Conference Laser Optics takes place biennially in Saint Petersburg, Russia. This is a traditional scientific event in the field of laser physics, optics, and photonics. 20th International Conference Laser Optics (ICLO 2022) was held from 20 to 24 June 2022.
ICLO 2022 technical program included selected topic symposium, as well as plenary, parallel, and poster ...
Added: September 27, 2022
Горбунов А. В., Кулик Л. В., Kuznetsov V. et al., Письма в Журнал экспериментальной и теоретической физики 2017 Т. 106 № 10 С. 651-654
We demonstrate that non-equilibrium spin excitations drift to macroscopically large distances in a 2D electron gas (symmetrically doped GaAs/AlGaAs quantum well) in a quantizing magnetic field at filling factor $\nu $ = 2. The effect is induced by low-temperature photoexcitation of a dense ensemble of long-lived ($\sim 1 $ ms) spin excitations − cyclotron spin-flip magnetoexcitons. The spin excitation ...
Added: December 11, 2017
Издательство "Перо", 2019
The conference is devoted to fundamental problems of semiconductor physics.Main sections of the program:
1. Bulk semiconductors: electrical and optical properties, relaxation of charge carriers, ultrafast phenomena, excitons, phonons, phase transitions, ordering.
2. Surface, films, layers: epitaxy, atomic and electronic structure of the surface, adsorption and surface reactions, processes of formation (self-organization) of nanoclusters, STM and AFM, optical microscopy ...
Added: October 28, 2019
Weinheim : Wiley-VCH, 2019
Added: November 1, 2019
Ikhsanov R., Protsenko I., Smetanin I. et al., Journal of Physical Chemistry C 2023 Vol. 127 No. 50 P. 24223-24232
Concepts of local and global photoemission directivity patterns are
introduced for plasmonic nanoparticles of arbitrary shape, and the relationship between
them is established. Formulas for the local photoemission directionality pattern for
surface and volume photoemission mechanisms are obtained for a given field distribution
in plasmonic modes inside nanoparticles of arbitrary shape. As an illustration of the
theory, the local and ...
Added: September 5, 2023
Lapshinov B. A., Magunov A. N., Приборы и техника эксперимента 2010 Т. 53 № 1 С. 159-164
A setup for measuring the temperature dependences of refractive indices n(T) of semiconductors and dielectrics in the temperature range 300–700 K at the wavelengths of a He–Ne laser л = 0.63, 1.15, and 3.39 µm is described. Samples in the form of plane–parallel plates serve as Fabry–Perot etalons the optical thickness of which depends on ...
Added: April 23, 2012
Институт физики металлов им. М.Н. Михеева УрО РАН, 2022
Electronic properties of low-dimensional systems ; Structures and properties of the semiconductors with impurities of transition elements ; New Electronic phenomena and materials ...
Added: December 7, 2022
Lysenko A. P., Golubiatnikov V. A., Grigoryev F. I. et al., Semiconductors 2014 Vol. 48 No. 13 P. 1700-1703
The effect of local illumination providing a high level of freecarrier injection on the conductivity of a sample of semiinsulating cadmium telluride and on the properties of ohmic contacts to the sample is studied. It is found that, irrespective of the illumination region, the contact resistance of ohmic contacts decreases and the concentration of majority ...
Added: November 10, 2014
Zhumagulov Y., Vagov A., Gulevich D. et al., Journal of Chemical Physics 2020 Vol. 153 No. 4 Article 044132
We demonstrate that the temperature and doping dependencies of the photoluminescence (PL) spectra of a doped MoS2 monolayer have several peculiar characteristics defined by the trion radiative decay. While only zero-momentum exciton states are coupled to light, radiative recombination of non-zero momentum trions is also allowed. This leads to an asymmetric broadening of the trion spectral ...
Added: February 24, 2022
Kukushkin I., Vankov A., Kaysin B., Physical Review B: Condensed Matter and Materials Physics 2017 Vol. 96 P. 235401-1-235401-8
We perform a magneto-optical study of a two-dimensional electron systems in the regime of the Stoner
ferromagnetic instability for even quantum Hall filling factors on MgxZn1−xO/ZnO heterostructures. Under
conditions of Landau-level crossing, caused by enhanced spin susceptibility in combination with the tilting of the
magnetic field, the transition between two rivaling phases, paramagnetic and ferromagnetic, is traced in ...
Added: December 19, 2017
Lysenko A. P., Golubiatnikov V. A., Grigoryev F. I. et al., Приборы и техника эксперимента 2014 № 3 С. 93-96
The influence of light illumination of ohmic contacts to high-ohmic gallium arsenide and cadmium telluride samples is investigated. It is revealed, that near-contact –area illumination influences not only upon transition resistance, but also upon volume conductivity of the samples due to increasing of free carrier concentration. The new method of separate determination of ohmic contact ...
Added: January 14, 2014
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
Zhumagulov Y., Vagov A., Senkevich N. et al., Physical Review B: Condensed Matter and Materials Physics 2020 Vol. 101 No. 24 Article 245433
Optical spectra of two-dimensional transition-metal dichalcogenides (TMDC) are influenced by complex multiparticle excitonic states. Their theoretical analysis requires solving the many-body problem, which in most cases, is prohibitively complicated. In this work, we calculate the optical spectra by exact diagonalization of the three-particle Hamiltonian within the Tamm-Dancoff approximation where the doping effects are accounted for ...
Added: February 24, 2022
Glushkov V. V., Божко А. Д., Богач А. В. et al., Physica Status Solidi - Rapid Research Letters 2016 Vol. 10 No. 4 P. 320-323
We report the study of transport and magnetic properties of the YbB6–δ single crystals grown by inductive zone melting. A strong disparity in the low temperature resistivity, Seebeck and Hall coefficients is established for the samples with the different level of boron deficiency. The effective parameters of the charge transport in YbB6–δ are shown to ...
Added: February 25, 2017
Zavyalov V., Pyurbeeva E. B., Khaldeev S., , in : 28th International Conference on Low Temperature Physics. : M. : Faculty of Physics, MSU, 2017. Ch. 012085. P. 1-5.
Despite the fact that electron transport in condensed helium has been studied for
over half a century [1], observations of new intriguing effects still appear [2]. Alas, the traditional
methods of injecting electrons into condensed helium (radioactive-sources, electrical discharge
or field emission) lead to generation of helium ions, recombination of which is accompanied by
emergence of a large number ...
Added: October 23, 2019
Lysenko A. P., Golubiatnikov V. A., Grigoryev F. I. et al., В кн. : XXIII Международная научно-техническая конференция по фотоэлектронике и приборам ночного видения 28-30 мая 2014, Москва, Россия. : М. : ОАО "НПО "Орион", 2014. Гл. 64. С. 441-444.
It is known that illumination of the sample vysokomnogo semiconductor material significantly changes its electrical properties. It is shown that the contact regions of the sample illumination with monochromatic radiation intensity adjustable with a photon energy greater than the width of the forbidden zone of the test material, reduces the resistance of the sample, in ...
Added: October 22, 2014
Belykh V. V., Kuntsevich A., Glazov M. M. et al., Physical Review X 2018 Vol. 8 P. 031021-1-031021-8
Manifestations of quantum interference effects in macroscopic objects are rare. Weak localization is one
of the few examples of such effects showing up in the electron transport through solid state. Here, we show
that weak localization becomes prominent also in optical spectroscopy via detection of the electron spin
dynamics. In particular, we find that weak localization controls the ...
Added: September 10, 2018
Lysenko A. P., Golubiatnikov V. A., Grigoryev F. I. et al., Известия высших учебных заведений. Электроника 2014 Т. 106 № 2 С. 16-21
The influence of local illumination providing high level of free charge carrier injection upon semiinsulating cadmium telluride sample conductivity and properties of ohmic contacts to the sample is investigated. It is revealed, that independently upon illumination region the value of ohmic contact transition resistance decreases and main charge carrier concentration increases proportionally illumination intensity. Light ...
Added: February 3, 2014
Nagler P., Ballottin M., Mitioglu A. et al., Physical Review Letters 2018 Vol. 121 No. 5 P. 057402
Atomically thin semiconductors provide an ideal testbed to investigate the physics of Coulomb-bound many-body states. We shed light on the intricate structure of such complexes by studying the magnetic-field-induced splitting of biexcitons in monolayer WS2 using polarization-resolved photoluminescence spectroscopy in out-of-plane magnetic fields up to 30 T. The observed g factor of the biexciton amounts to about −3.9, closely matching the g factor ...
Added: November 12, 2020
Lazarev M., Infoscience EPFL 2019 P. 1-163
We have focused on the ability to tune the aluminum (Al) content of the AlGaAs alloy along the growth direction in inverted pyramids (by MOVPE), thus tailoring the potential along a QWR nanostructure. Three parabolic-potential QDs (PQDs) of different potential gradients have thus been realized. The parabolic profiles were changed systematically by fixing the minimum ...
Added: October 29, 2021
S.V. Ivanov, , in : PROCEEDINGS - INTERNATIONAL CONFERENCE LASER OPTICS 2020, ICLO 2020. : St. Petersburg : IEEE, 2020. Ch. 1.
Added: October 31, 2021
Ghosh I., Khamrai J., Savateev A. et al., Science 2019 Vol. 365 No. 6451 P. 360-366
Photoexcited electron-hole pairs on a semiconductor surface can engage in redox reactions with two different substrates. Similar to conventional electrosynthesis, the primary redox intermediates afford only separate oxidized and reduced products or, more rarely, combine to one addition product. Here, we report that a stable organic semiconductor material, mesoporous graphitic carbon nitride (mpg-CN), can act ...
Added: October 5, 2020