Coherence Resonance and Stochastic Resonance in an Excitable Semiconductor Superlattice.

@article{Momp2018CoherenceRA,
  title={Coherence Resonance and Stochastic Resonance in an Excitable Semiconductor Superlattice.},
  author={Emanuel Momp{\'o} and Miguel Ruiz-Garc{\'i}a and Manuel Carretero and Holger T. Grahn and Yaohui Zhang and Luis L. Bonilla},
  journal={Physical review letters},
  year={2018},
  volume={121 8},
  pages={
          086805
        }
}
Collective electron transport causes a weakly coupled semiconductor superlattice under dc voltage bias to be an excitable system with 2N+2 degrees of freedom: electron densities and fields at N superlattice periods plus the total current and the field at the injector. External noise of sufficient amplitude induces regular current self-oscillations (coherence resonance) in states that are stationary in the absence of noise. Numerical simulations show that these oscillations are due to the… 

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