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Single-electron soliton avalanches in tunnel junction arrays

Viktor A. Sverdlov·Daniel M. Kaplan·Alexander N. Korotkov·Konstantin K. Likharev
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Abstract

Numerical modeling of correlated single-electron tunneling in uniform 2D arrays of small conducting islands separated by tunnel junctions shows the possiblility of soliton-antisoliton avalanches. Though the time duration of any avalanche, and the total charge $ΔQ = ne$ transferred across the array during the avalanche, are always finite, in arrays with length $N$ larger than certain critical value $N_c$ and large width $M \gg f(N)$, the avalanche magnitude $n$ may be exponentially large, resulting in particular in a giant increase of shot noise. Thermal fluctuations and disorder gradually suppress the avalanche effect.

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Viktor A. Sverdlov, Daniel M. Kaplan, Alexander N. Korotkov, Konstantin K. Likharev. 2000-09-29. Single-electron soliton avalanches in tunnel junction arrays. https://doi.org/10.1103/physrevb.64.041302

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