✦ LIBER ✦

Symmetry-breaking and chaos in electron transport in semiconductor superlattices

✍ Scribed by Kirill N. Alekseev; Ethan H. Cannon; Jonathan C. McKinney; Feodor V. Kusmartsev; David K. Campbell

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 403 KB
Volume: 113
Category: Article
ISSN: 0167-2789
DOI: 10.1016/s0167-2789(97)00260-1

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✦ Synopsis

We study the motion of ballistic electrons in a single miniband of a semiconductor superlattice (SSL) driven by a terahertr laser polarized along the growth direction. We work in the semiclassical balance-equation model. including different elastic and inelastic scattering rates, and incorporating the self-consistent electric field generated by electron motion. We explore regions of complex dynamics, which can include chaotic behavior and symmetry-breaking.

Finally, we estimate the magnitude of the DC current and voltage that spontaneously appear in regions of broken-symmetry for parameters characteristic of real SSLs.

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