✦ LIBER ✦

Correlated Random Tight-Binding System with One Periodic State: Its Time Evolution and the Effects of an Added Nonlinearity

✍ Scribed by B. Lindquist; R. Riklund

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 307 KB
Volume: 209
Category: Article
ISSN: 0370-1972
DOI: 10.1002/(sici)1521-3951(199810)209:2<353::aid-pssb353>3.0.co;2-t

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✦ Synopsis

We study a one-dimensional tight-binding system with constant on-site potential and off-diagonal hopping integrals t binary valued, and distributed as correlated random dimers. An explicit transformation from the system with constant t reveals that not only all states are extended, but in addition one of the states is periodic. The transformation is valid also for the corresponding timedependent system, even including a nonlinear term. An example of the time evolution of a solitonlike state is shown.