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http://hdl.handle.net/1783.1/1874
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| Title: | An anomaly of the current self-oscillation frequency in the sequential tunneling of a doped GAAS/AlAs superlattice |
| Authors: | Wang, Xiang-Rong
Wang, Jiannong
Sun, Bao-Quan
Jiang, D. S. |
| Keywords: | Current self-oscillation frequency
Dynamic dc voltage bands
GaAs/AlAs superlattice |
| Issue Date: | Mar-2000 |
| Citation: | Physical review. B, Condensed matter and materials physics, v. 61, no. 11, March 2000, p. 7261-7264 |
| Abstract: | An anomalous behavior of the current self-oscillation frequency is observed in the dynamic dc voltage bands, emerging from each sawtooth-like branch of the current-voltage characteristic of a doped GaAs/AlAs superlattice in the transition process from static to dynamic electric field domain formations. Varying the applied dc voltage at a fixed temperature, we find that the frequency increases while the averaged current decreases. Inside each voltage band, the frequency has a strong voltage dependence in the temperature range where the averaged current changes with the applied dc voltage. This dependence can be understood in terms of motion of the system along a limit cycle. |
| Rights: | Physical Review B - Condensed Matter and Materials Physics © copyright 2000 American Physical Society. The Journal's web site is located at http://prb.aps.org |
| URI: | http://hdl.handle.net/1783.1/1874 |
| Appears in Collections: | PHYS Journal/Magazine Articles
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| article4.pdf | pre-published version | 166Kb | Adobe PDF | View/Open |
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