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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vetrov S. Y., Shabanov A. V.
Заглавие : Localized electromagnetic modes and the transmission spectrum of a one-dimensional photonic crystal with lattice defects
Место публикации : J. Exp. Theor. Phys.: AMER INST PHYSICS, 2001. - Vol. 93, Is. 5. - P977-984. - ISSN 1063-7761, DOI 10.1134/1.1427109
Примечания : Cited References: 26
Предметные рубрики: BAND-GAP
SPONTANEOUS EMISSION
SUPERLATTICES
WAVES
PROPAGATION
LIGHT
EDGE
Аннотация: The properties of localized electromagnetic modes in a one-dimensional photonic crystal with a structural defect layer were studied. The role of the defect was played by an anisotropic nematic liquid crystal layer. The frequency and the damping factor of defect modes were shown to substantially depend on the defect layer thickness and the orientation of the optical axis of the nematic. The transmission spectra of photonic crystals with one and two lattice defects were studied. Taking into account the special feature of nematic liquid crystals distinguishing them from usual crystals, namely, large permittivity anisotropy, it was shown that the transmission spectrum of the photonic crystal could be controlled by varying the orientation of the optical axis of the nematic, for instance, under the action of an external electric field. (C) 2001 MAIK "Nauka/Interperiodica".
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Patrin G. S., Ovchinnikov S. G., Velikanov D. A., Kononov V. P.
Заглавие : Magnetic properties of Fe/Si/Fe trilayer films
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2001. - Vol. 43, Is. 9. - P1712-1714. - ISSN 1063-7834, DOI 10.1134/1.1402227
Примечания : Cited References: 10
Предметные рубрики: SUPERLATTICES
Аннотация: The magnetization of Fe/Si/Fe trilayer films is experimentally investigated at low temperatures. It is found that the shape of the magnetization curves measured at T 30 K depends on the thermomagnetic state of the system. The possible mechanisms of the interaction between iron layers are discussed. (C) 2001 MAIK "Nauka/Interperiodica".
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ignatchenko V. A., Mankov Y. I., Maradudin A. A.
Заглавие : Effects of one- and three-dimensional inhomogeneities on the wave spectrum of multilayers with finite interface thicknesses
Место публикации : Phys. Rev. B: AMERICAN PHYSICAL SOC, 2002. - Vol. 65, Is. 2. - Ст.24207. - ISSN 1098-0121, DOI 10.1103/PhysRevB.65.024207
Примечания : Cited References: 24
Предметные рубрики: PERIODIC MULTILAYERS
SPIN-WAVES
LOCALIZATION
SUPERLATTICES
SYSTEMS
DISORDER
AVERAGE
MEDIA
Аннотация: To describe a partially randomized multilayer structure with arbitrary thicknesses of the interfaces between layers, we introduce a model in which the dependence of a material parameter along the axis of such a Superlattice is described by a Jacobian elliptic sine function with a random spatial modulation of its period. Both one- and three-dimensional inhomogeneities of the period are considered. We develop the correlation function for this model, and investigate the dispersion law and damping of averaged waves in this superlattice. The dependencies of the widths of the gaps in the spectrum and the damping at the boundaries of all odd Brillouin zones, on the thicknesses of the interfaces, and on the dimensionality, intensity, and correlation wave number of the inhomogeneities are found. It is shown that experimental investigations of the widths of the gaps and damping for several Brillouin zones could permit, in principle, determining all parameters of the superlattice as well as the parameters of the inhomogeneities from these spectral characteristics.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gluck M., Keck F., Kolovsky A. R., Korsch H. J.
Заглавие : Wannier-Stark states of a quantum particle in 2D lattices
Место публикации : Phys. Rev. Lett.: AMERICAN PHYSICAL SOC, 2001. - Vol. 86, Is. 14. - P3116-3119. - ISSN 0031-9007, DOI 10.1103/PhysRevLett.86.3116
Примечания : Cited References: 18
Предметные рубрики: BLOCH PARTICLE
AC FIELDS
LADDERS
DC
SUPERLATTICES
STATISTICS
ELECTRONS
LIFETIME
Аннотация: A simple method of calculating the Wannier-Stark resonances in 2D lattices is suggested. Using this method we calculate the complex Wannier-Stark spectrum for a nonseparable 2D potential realized in optical lattices and analyze its general structure. The dependence of the lifetime of Wannier-Stark states on the direction of the static field (relative to the crystallographic axis of the lattice) is briefly discussed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mushailov E. S., Kim P. D., Turpanov I. A., Bondarenko G. V., Bondarenko G. N., Mishina S. E.
Заглавие : Multilayer composite epitaxial CuCo single crystals
Место публикации : JETP Letters. - 2000. - Vol. 71, Is. 5. - P.195-197. - ISSN 0021-3640, DOI 10.1134/1.568313
Примечания : Cited References: 10
Предметные рубрики: SUPERLATTICES
DIFFRACTION
FILMS
Аннотация: The ion-plasma spraying method was used to synthesize new phases of metastable atomic-ordered layered CuCo single crystals and single crystals of CucCo1 - c solid solutions via epitaxial layer-by-layer crystallization, and some of their physical properties were studied. (C) 2000 MAIK "Nauka/Interperiodica".
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhigalov V. S., Frolov G. I., Kveglis L. I.
Заглавие : Nanocrystalline cobalt films prepared under ultrafast condensation conditions
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 1998. - Vol. 40, Is. 11. - P1878-1883. - ISSN 1063-7834, DOI 10.1134/1.1130677
Примечания : Cited References: 12
Предметные рубрики: IRON FILMS
SUPERLATTICES
GROWTH
FE
CO
Аннотация: The magnetic and electrical properties and the temperature dependence of these properties of cobalt films prepared at high condensation rates (10(5)-10(6) Angstrom/s) are investigated. Incremented annealing reveals several nonequilibrium states of cobalt in transition from the as-prepared metastable structure to the ordinary hcp structure. The anomalies of the properties are analyzed from the standpoint of the nanocrystalline state of the samples. Model concepts of microcluster formations in the investigated films are also discussed. (C) 1998 American Institute of Physics. [S1063-7834(98)02411-3].
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Man'kov Yu. I., Tsikalov D. S.
Заглавие : High-frequency susceptibility of a multilayered ferromagnetic system with two-dimensional inhomogeneities
Место публикации : Phys. Solid State. - NEW YORK: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2010. - Vol. 52, Is. 3. - С. 544-553. - MAR. - ISSN 1063-7834, DOI 10.1134/S1063783410030157
Примечания : Cited Reference Count: 24. - Гранты: This study was supported in part by the Council on Grants from the President of the Russian Federation for the State Support of Scientific Investigations performed by the Leading Scientific Schools (grant no. 3818.2008.3), the Presidium of the Russian Academy of Sciences (Program no. 27.1), and the Ministry of Education and Science within the framework of the Federal Program (State Contract no. 2.740.11.0220).Финансирующая организация: Russian Federation [3818.2008.3]; Presidium of the Russian Academy of Sciences [27.1]; Ministry of Education and Science [2.740.11.0220]
Предметные рубрики: SPIN-WAVE SUSCEPTIBILITY
SPECTRUM
SUPERLATTICES
INTERFACES
Аннотация: This paper reports on the results of the investigation of the high-frequency susceptibility of a layered ferromagnetic structure in which, apart from a periodic change in the magnetic anisotropy parameter from layer to layer, this parameter varies along layers according to a random law (the superlattice with two-dimensional phase inhomogeneities). The evolution of the frequency dependence of the imaginary part of the averaged Green's function in the range of the energy gap (band gap) in the spectrum of waves propagating along the superlattice axis due to the change in the relative root-mean-square fluctuations of the phase gamma 2 has been studied at the boundaries of the odd Brillouin zones. It has been found that, for all odd Brillouin zones, the imaginary part of the Green's function exhibits a universal behavior: the peak corresponding to the edge of the band gap with a lower frequency remains unchanged, and the peak corresponding to the edge of the band gap with a higher frequency is smoothed with an increase in the quantity gamma(2). These effects, which were initially revealed at the boundary of the first Brillouin zone of the sinusoidal superlattice, have been explained, as before, by the specific features of the energy conservation laws for the incident and scattered waves in the lattice with two-dimensional inhomogeneities. It has been demonstrated that an increase in the Brillouin zone number leads to a decrease in the value of gamma(2) at which the peak at the edge of the band gap with a higher frequency disappears.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Myagkov V. G., Li L. A., Bykova L. E., Turpanov I. A., Kim P. D., Bondarenko G. V., Bondarenko G. N.
Заглавие : Self-propagating high-temperature synthesis in Pt/Co/MgO(001) epitaxial thin films
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2000. - Vol. 42, Is. 5. - P968-972. - ISSN 1063-7834, DOI 10.1134/1.1131321
Примечания : Cited References: 26
Предметные рубрики: PERPENDICULAR MAGNETIC-ANISOTROPY
LAYERED STRUCTURES
CO/PT
MULTILAYERS
SUPERLATTICES
PTFE(001)
GROWTH
PD/CO
Аннотация: The self-propagating high-temperature synthesis in the two-layer and multilayer Pt / Co(001) thin films has been investigated. It is shown that the initiation of the synthesis occurs at temperatures of 770-820 K. After the synthesis in the two-layer film samples, the PtCo(001) disordered phase exhibits an epitaxial growth at the interface between cobalt and platinum layers. In the multilayer Pt/Co(001) thin films, the self-propagating high-temperature synthesis also brings about the formation of the PtCo(001) disordered phase on the MgO(001) surface. Further annealing at a temperature of 870 K for 4 h results in the transition of the PtCo(001) disordered phase to the ordered phase. Rapid thermal annealing of the Pt/Co(001) multilayer films at a temperature of 1000 K leads to the formation of the CoPt3 phase. The magnetic characteristics change in accord with the structural transformations in Pt/Co film samples. (C) 2000 MAIK "Nauka/Interperiodica".
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Alekseev K. N., Erementchouk M. V., Kusmartsev F. V.
Заглавие : Direct-current generation due to wave mixing in semiconductors
Место публикации : Europhys. Lett. - 1999. - Vol. 47, Is. 5. - P.595-600. - ISSN 0295-5075, DOI 10.1209/epl/i1999-00430-0
Примечания : Cited References: 34
Предметные рубрики: BLOCH OSCILLATOR
SUPERLATTICES
PHOTOCURRENT
TRANSPORT
FREQUENCY
FIELD
RECTIFIERS
EMISSION
CHAOS
GAAS
Аннотация: We describe an effect of the generation of direct current which may arise in semiconductors or semiconductor microstructures due to a mixing of coherent electromagnetic radiations of commensurate frequencies. The effect is, in essence, due to a nonparabolicity of the electron energy bands and is stronger in systems where this nonparabolicity is greater. We have made exact calculations in the framework of the Kane model, applicable to narrow-gap semiconductors and the tight-binding model which we employ for a description of a semiconductor superlattice.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Alekseev K. N., Ponomarev A. V.
Заглавие : Optical chaos in nonlinear photonic crystals
Место публикации : JETP Letters. - 2002. - Vol. 75, Is. 4. - P.174-178. - ISSN 0021-3640, DOI 10.1134/1.1475717
Примечания : Cited References: 34
Предметные рубрики: POLED LITHIUM-NIOBATE
3RD-HARMONIC GENERATION
WAVE-GUIDES
SUPERLATTICES
CHI((2))
Аннотация: We examine the spatial evolution of lightwaves in a nonlinear photonic crystal with a quadratic nonlinearity, when a second harmonic and a sum-frequency generation are simultaneously quasi-phase-matched. We find the conditions for a transition to Hamiltonian chaos for different amplitudes of lightwaves at the crystal boundary. (C) 2002 MAIK "Nauka/ Interperiodica".
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