Single-electron soliton avalanches in tunnel junction arrays

Details Single-electron soliton avalanches in tunnel junction arrays Single-electron soliton avalanches in tunnel junction arrays

2000-09-29

arxiv.org/abs/cond-mat/0009477v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages (including 5 figures)

Scientific paper

10.1103/PhysRevB.64.041302

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 $\Delta Q = ne$ 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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