Chaos in resonant-tunneling superlattices

Details Chaos in resonant-tunneling superlattices Chaos in resonant-tunneling superlattices

1995-06-07

arxiv.org/abs/cond-mat/9506030v1

Phys. Rev. B 52 (1995) 7849

Physics

Condensed Matter

3 pages, LaTex, RevTex, 3 uuencoded figures (1.2M) are available upon request from oleg@arwen.uc3m.es, to appear in Phys.Rev.B

Scientific paper

10.1103/PhysRevB.52.7849

Spatio-temporal chaos is predicted to occur in n-doped semiconductor superlattices with sequential resonant tunneling as their main charge transport mechanism. Under dc voltage bias, undamped time-dependent oscillations of the current (due to the motion and recycling of electric field domain walls) have been observed in recent experiments. Chaos is the result of forcing this natural oscillation by means of an appropriate external microwave signal.

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