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Dissipative chaos in semiconductor superlattices / K. N. Alekseev [et al.]> // Phys. Rev. B. - 1996. - Vol. 54, Is. 15. - P. 10625-10636, DOI 10.1103/PhysRevB.54.10625. - Cited References: 89
. - ISSN 0163-1829РУБ Physics, Condensed Matter Рубрики: NEGATIVE DIFFERENTIAL CONDUCTIVITY INJECTED SIGNAL BLOCH OSCILLATIONS COLLECTIVE EXCITATIONS DETERMINISTIC CHAOS MINIBAND TRANSPORT SURFACE-PLASMONS TIME-SERIES LASER VELOCITY Аннотация: We consider the motion of ballistic electrons in a miniband of a semiconductor superlattice (SSL) under the influence of an external, time-periodic electric field. We use a semiclassical, balance-equation approach, which incorporates elastic and inelastic scattering (as dissipation) and the self-consistent field generated by the electron motion. The coupling of electrons in the miniband to the self-consistent held produces a cooperative nonlinear oscillatory mode which, when interacting with the oscillatory external field and the intrinsic Bloch-type oscillatory mode, can lead to complicated dynamics, including dissipative chaos. For a range of values of the dissipation parameters we determine the regions in the amplitude-frequency plane of the external field in which chaos can occur. Our results suggest that for terahertz external fields of the amplitudes achieved by present-day free-electron lasers, chaos may be observable in SSL's. We clarify the nature of this interesting nonlinear dynamics in the superlattice-external-field system by exploring analogies to the Dicke model of an ensemble of two-level atoms coupled with a resonant cavity field, and to Josephson junctions.
WOS Держатели документа: LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545 LV KIRENSKII INST PHYS,KRASNOYARSK 660036,RUSSIA UNIV ILLINOIS,DEPT PHYS,URBANA,IL 61801 ИФ СО РАН Доп.точки доступа: Alekseev, K. N.; Berman, G. P.; Campbell, D. K.; Cannon, E. H.; Cargo, M. C. } Найти похожие
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