Bifurcation Diagrams and Poincar Maps of Current-oscillations in Superlattices

CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2003, Vol. 20 ›› Issue (1): 91-94.

Bifurcation Diagrams and Poincar Maps of Current-oscillations in Superlattices

Department of Physics, Beijing Normal University, Beijing 100875, China

Received:2001-06-26 Revised:2001-09-10 Online:2003-01-25 Published:2003-01-25

Abstract

Abstract: The transportation behavior of electric-field domains in a n-doped weakly coupled GaAs/AlAs superlattices under dc+ac voltage bias is studied numerically within a discrete drift model.Fixing the ac driving frequency at the golden mean ratio,the quasiperiodicity、requency-locking and chaos of the current for different ac amplitude are analyzed.

Key words: superiattices, current oscillation, bifurcation diagram, Poincaré, map

CLC Number:

O481

ZHANG Oi-yi, TIAN Oiang. Bifurcation Diagrams and Poincar Maps of Current-oscillations in Superlattices[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2003, 20(1): 91-94.

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Bifurcation Diagrams and Poincar Maps of Current-oscillations in Superlattices

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