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Please use this identifier to cite or link to this item:
http://hdl.handle.net/1783.1/2128
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| Title: | Limit cycle theory of temporal current self-oscillations in sequential tunneling of superlattices |
| Authors: | Sun, Zhouzhou
Wang, Shidong
Duan, S. Q.
Wang, Xiang-Rong |
| Keywords: | Thin films
Electrical properties
Tunneling
High-field and nonlinear effects |
| Issue Date: | 28-Apr-2003 |
| Abstract: | A unified theory of the temporal current self-oscillations is presented. We establish these oscillations as the manifestations of limit cycles, around unstable steady-state solutions caused by the negative differential conductance. This theory implies that both the generation and the motion of an electric-field domain boundary are universal in the sense that they do not depend on the initial conditions. Under an extra weak ac bias with a frequency Wac, the frequency must be either Wac or an integer fractional of Wac if the tunneling current oscillates periodically in time, indicating the periodic doubling for this non-linear dynamical system. |
| URI: | http://hdl.handle.net/1783.1/2128 |
| Appears in Collections: | PHYS Preprints
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Size | Format |
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| limitcycle.pdf | | 192Kb | Adobe PDF | View/Open |
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