Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Golubentsev, A."'
Publikováno v:
Europhysics Letters (EPL). 41:31-36
We demonstrate from first principles that ferromagnetic core, meron vortex configurations of the spin-½ antiferromagnet in two-dimensions give rise to midgap electronic states in the Mott-Hubbard charge gap. Merons are collective mode excitations of
Autor:
Sajeev John, Andrey Golubentsev
Publikováno v:
Physical Review B. 51:381-398
For a topological antiferromagnet on a square lattice, with the standard Hartree-Fock, spin-density-wave decoupling of the on-site Hubbard interaction, there is an exact mapping of the low-energy one-electron excitation spectrum to a relativistic Dir
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 191:352-357
Resonant Rayleigh scattering by fractal clusters is shown to be greatly enhanced. Localization of light occurs when the spatial scale of coherent multiple scattering is reduced to the wavelength. Anomalies in light absorption by fractals arise becaus
Publikováno v:
Soviet Journal of Quantum Electronics. 20:934-938
An experimental investigation was made of a new method for phase locking of a periodic laser array. The advantages of the method include an afocal position of a spatial filter and the ease of variation of the coefficient representing the coupling bet
Autor:
V.M. Anikin, A. F. Golubentsev
Publikováno v:
International Journal of Bifurcation and Chaos. :1049-1051
The simple one-dimensional mappings which demonstrate the chaotic behavior on the infinite interval and the appertaining explicit invariant densities having the forms of Cauchy distribution, F-distribution, and Z-distribution are presented.
Autor:
A.F. Golubentsev, V.M. Anikin
Publikováno v:
Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356).
The influence of probabilistic assumptions that determine the statistical model of multistable fluctuations in the field emission on the theoretical noise spectrum shape is studied.
Autor:
V.M. Anikin, A.F. Golubentsev
Publikováno v:
9th International Vacuum Microelectronics Conference.
The major threats to the field emission stability are reviewed. The probabilistic description of the field emission fluctuations is presented. The spectrum of emission fluctuations is calculated analytically for various models of random pulse current
Autor:
A.F. Golubentsev, V.M. Anikin
Publikováno v:
Eleventh International Vacuum Microelectronics Conference. IVMC'98 (Cat. No.98TH8382).
Some peculiarities of the field emission from micro- and nano-structural FEAs (e.g., a random FEA structure, a random multistable current from a single emissive center) are investigated using various Markov probabilistic models for the theoretical de
Autor:
V.M. Anikin, A.F. Golubentsev
Publikováno v:
IVMC '95. Eighth International Vacuum Microelectronics Conference. Technical Digest (Cat. No.TH8012).
The Markov probabilistic model of emissive fluctuations and degradation for an emissive area with the "limited emissive resource" is presented. The relationships between characteristics of the emissive fluctuations and the reliability for such an emi
Autor:
A. F. Golubentsev, V.M. Anikin
Publikováno v:
Radiophysics and Quantum Electronics. 36:658-660