English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Undoped and strongly photoexcited semiconductor superlattices withfield-dependent recombination behave as excitable or oscillatory media withspatially discrete nonlinear convection and diffusion. Infinitely long,dc-current-biased superlattices behaving as excitable media exhibit wave frontswith increasing or decreasing profiles, whose velocities can be calculated bymeans of asymptotic methods. These superlattices can also support pulses of theelectric field. Pulses moving downstream with the flux of electrons can beconstructed from their component wave fronts, whereas pulses advancing upstreamdo so slowly and experience saltatory motion: they change slowly in longintervals of time separated by fast transitions during which the pulses jump tothe previous superlattice period. Photoexcited superlattices can also behave asoscillatory media and exhibit wave trains.

Wave fronts, pulses and wave trains in photoexcited superlattices behaving as excitable or oscillatory media