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61.
The generation of prismatic dislocation loops in strained quantum dots is investigated. The quantum dots are embedded in a film-substrate heterostructure with mechanical stresses caused by the difference between the lattice parameters of the film (heterolayer) and the substrate. The intrinsic plastic strain ?m of a quantum dot arises from the misfit between the lattice parameters of the materials of the quantum dot and the surrounding matrix. The interface between the heterolayer and the substrate is characterized by a misfit parameter f. The critical radius of a quantum dot R c at which the generation of a dislocation loop in the quantum dot becomes energetically favorable is analyzed as a function of the intrinsic plastic strain ?m and the misfit parameter f. 相似文献
62.
N. S. Averkiev V. A. Berezovets M. P. Mikhailova K. D. Moiseev V. I. Nizhankovskii R. V. Parfeniev K. S. Romanov 《Physics of the Solid State》2004,46(11):2153-2162
Specific features of the energy spectrum of a separated type-II heterojunction in an external magnetic field are studied theoretically and experimentally. It is shown that, due to hybridization of the states of the valence band of one semiconductor and the conduction band of the other semiconductor at the heterointerface, there are level anticrossings, which produce quasigaps in the density of states in a nonzero magnetic field. The experimental results of magnetotransport studies for the GaInAsSb/p-InAs quaternary solid solutions with different doping levels are shown to agree well with the results of simulation, and specific features of the energy spectrum of separated type-II heterojunctions are established. 相似文献
63.
D. M. Podorozhnyi V. L. Bulatov N. V. Baranova A. V. Vlasov A. G. Voronin N. N. Egorov S. A. Golubkov V. M. Grebenyuk D. E. Karmanov M. G. Korolev N. A. Korotkova Z. V. Krumshtein E. G. Lyannoy M. M. Merkin A. Yu. Pavlov A. Yu. Pakhomov A. V. Romanov A. B. Sadovskii L. G. Sveshnikova L. G. Tkachev A. V. Tkachenko A. Turundaevskiy 《Bulletin of the Russian Academy of Sciences: Physics》2007,71(4):500-502
The main purpose of the NUCLEON experiment is direct measurements of the energy spectra of cosmic rays in the range 1011–1015 eV with the use of the lightweight facility during a prolonged orbital flight. The energy is determined using a technique based on the measurement of the spatial density of secondary particles produced in the initial event of inelastic interaction. The schematic diagram of the NUCLEON facility, the current status of the project, the results of testing the prototype, and plans are presented. 相似文献
64.
A new mechanism is presented to model the relaxation phenomena in pentagonal nanorods (PNRs) – elongated multiple twinned crystals. It is demonstrated that a shell possessing crystal mismatch with respect to the PNR core region will reduce the internal energy of the PNR associated with wedge disclinations of strength 7°20′ lying along the PNR axis. We predict the existence of an optimal magnitude for core/shell crystal lattice mismatch and an optimal shell thickness providing maximum energy release for this mechanism of mechanical stress relaxation. The considered relaxation mechanism can be realized by the diffusion of impurities in the shell region without change of the PNR radius or by growth of a thin mismatched shell layer with the corresponding thickening of PNR. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
65.
66.
R. G. Valeev A. N. Deev F. Z. Gilmutdinov S. G. Bystrov O. I. Pivovarova É. A. Romanov V. V. Kriventsov M. R. Sharafutdinov A. A. Eliseev 《Journal of Structural Chemistry》2008,49(1):124-128
This paper presents the results of our study of the structural state and local atomic structure of zinc selenide films obtained by thermal evaporation in supervacuum at condensation temperatures of ?150°C, 0, and 150°C. Structure-sensitive methods such as X-ray diffraction, atomic force microscopy, and EXAFS spectroscopy were used. The parameters of the local atomic environment (interatomic distances, coordination numbers) of zinc and selenium atoms were obtained by Fourier transformation. 相似文献
67.
A. Yu. Romanov V. P. Silin S. A. Uryupin 《Bulletin of the Lebedev Physics Institute》2008,35(11):323-327
The spectra of transverse zero-sound waves in a two-component degenerate Fermi liquid were studied. The ranges of the existence of two and one waves were determined depending on the liquid interaction parameters. 相似文献
68.
Baranov P. G. Romanov N. G. Tolmachev D. O. Babunts R. A. Namozov B. R. Kusrayev Yu. G. Sedova I. V. Sorokin S. V. Ivanov S. V. 《JETP Letters》2008,88(9):631-635
JETP Letters - The axial fine structure with strong positive zero-field splitting for Mn2+ ions in CdMnSe/ZnSe quantum dots caused by their low dimensionality was revealed. Magnetic resonance was... 相似文献
69.
Semyon R. Romanov Yana V. Dolgova Maxim V. Morozov Kamil A. Ivshin Dmitriy A. Semenov Yulia V. Bakhtiyarova Irina V. Galkina Olga N. Kataeva Vladimir I. Galkin 《Mendeleev Communications》2021,31(2):242-243
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70.
Yu. I. Romanov 《Bulletin of the Russian Academy of Sciences: Physics》2013,77(4):476-479
Cross sections of elastic (anti)neutrino-electron scattering and neutrino annihilation of an electron-positron pair are obtained and analyzed based on the interaction between diagonal neutral currents and complex or purely imaginary coupling constants. 相似文献