On stochastic switching of bistable resonant-tunneling structures via nucleation

Details On stochastic switching of bistable resonant-tunneling structures via nucleation On stochastic switching of bistable resonant-tunneling structures via nucleation

2004-11-22

arxiv.org/abs/cond-mat/0411546v1

Phys. Rev. B. 71, 047301 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

the extended version of the Comment on "Lifetime of metastable states in resonant-tunneling structures" to appear in Phys. Rev

Scientific paper

10.1103/PhysRevB.71.047301

We estimate the critical size of the initial nucleus of the low current state in a bistable resonant tunneling structure which is needed for this nucleus to develop into a lateral switching front. Using the results obtained for deterministic switching fronts, we argue that for realistic structural parameters the critical nucleus has macroscopic dimensions and therefore is too large to be created by stochastic electron noise.

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