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Motion of Wavefronts in Semiconductor Superlattices

A. Carpio·L. L. Bonilla·G. Dell'Acqua
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Abstract

An analysis of wavefront motion in weakly coupled doped semiconductor superlattices is presented. If a dimensionless doping is sufficiently large, the superlattice behaves as a discrete system presenting front propagation failure and the wavefronts can be described near the threshold currents $J_i$ ($i=1,2$) at which they depin and move. The wavefront velocity scales with current as $|J-J_i|^{1\over 2}$. If the dimensionless doping is low enough, the superlattice behaves as a continuum system and wavefronts are essentially shock waves whose velocity obeys an equal area rule.

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A. Carpio, L. L. Bonilla, G. Dell'Acqua. 2002-01-17. Motion of Wavefronts in Semiconductor Superlattices. https://doi.org/10.1103/physreve.64.036204

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