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1.
It is predicted that resonance coupling between two discrete electron energy levels corresponding to different size-quantization
quantum numbers and different Landau quantum numbers can occur in a quantum well in a quantizing magnetic field. The resonance
coupling is due to the interaction of an electron with LO phonons and results in the formation of polaron states of a new type. It is shown that for a certain value of the magnetic
field, which depends on the splitting of the electron size-quantization levels, the absorption peak and the two-phonon resonance
Raman scattering peak split into two components, the separation between which is determined by the electron-phonon coupling
constant. The resonance coupling between size-quantization levels with the same Landau quantum numbers is also studied. The
splitting of the peaks in this case is virtually independent of the magnetic field and can be observed in much weaker fields.
The experimental observation of the effect will make it possible to determine the relative position of the electronic levels
and the electron-phonon coupling constant.
Pis’ma Zh. éksp. Teor. Fiz. 65, No. 7, 511–515 (10 April 1997) 相似文献
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V. M. Korovin 《Technical Physics》2006,51(8):963-970
The subject of investigation is a configuration made up of immiscible magnetic fluids surrounding a long current-carrying conductor in the presence of an external longitudinal magnetic field. The axisymmetric problem of capillary instability of this configuration is considered in a linear statement. A dispersion relation is derived and analyzed, and neutral stability curves are constructed. The effect of the magnetic field and a step change in the permeabilities of the bordering fluids on the characteristic size of drops arising as a result of capillary disintegration of a continuous cylindrical layer of the magnetic fluid is discussed. 相似文献
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M. V. Sosnova N. L. Dmitruk A. V. Korovin S. V. Mamykin V. I. Mynko O. S. Lytvyn 《Applied physics. B, Lasers and optics》2010,99(3):493-497
Optical properties of a one-dimensional periodic array of subwavelength metal nanowires in the regime of local plasmon excitation
are investigated experimentally and theoretically. Both gas and liquid sensing by one-dimensional gold nanowires on a glass
substrate produced by holographic lithography are demonstrated experimentally. The obtained spectral sensitivity of a local
plasmon sensor to the refractive index of the environment is found comparable to that of a surface plasmon polariton sensor
based on the grating coupler effect. The influence of nanowire shape on spectral sensitivity is studied theoretically in a
differential formalism framework using a curvilinear coordinate transformation for triangular, trapezoidal, and rectangular
cross sections of the nanowires. For nanowires with trapezoidal cross section, theoretical calculations for the spectral sensitivity
to variation of the refractive index of the environment agree well with experimental data. 相似文献
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V. V. Popov A. P. Menushenkov Ya. V. Zubavichus A. A. Veligzhanin A. A. Yaroslavtsev R. V. Chernikov D. S. Leshchev V. F. Petrunin S. A. Korovin J. Bednarcik 《Russian Journal of Inorganic Chemistry》2013,58(3):331-337
Evolution of the nanocrystalline structure of the complex oxide Dy2HfO5 in the course of thermal annealing at temperatures to 1600°C has been studied by a combination of X-ray and synchrotron methods, including traditional and anomalous X-ray diffraction, PDF, EXAFS, and SAXS. The changes in crystallite size upon annealing of the as-synthesized amorphous precursor have been analyzed in detail. The systematic distortions of a fluorite-type perfect crystal structure (space group $Fm\bar 3m$ ) related to the nonequivalence of the local environment of the Dy and Hf cations but not resulting in formation of a pyrochlore-type cationordered structure in this system have been examined. 相似文献
10.
V. G. Kazakov V. A. Lipin V. A. Matveev D. V. Maiorov V. N. Korovin 《Russian Journal of Applied Chemistry》2013,86(1):1-5
A scheme of nepheline processing by a hydrochemical method was technically justified. In this process, silica is transformed into calcium hydrosilicate under autoclave conditions at a low concentration of caustic alkali. This allows the process at high heat regeneration and low steam flow for evaporation of a solution. A joint effect of temperature, leaching time, and concentration of caustic alkali solution was examined on an alumina recovery. Experiments were designed using a combined rotatable design of a second order. 相似文献