Comment on "Lifetime of metastable states in resonant tunneling structures" -: art. no. 047301

被引：4
|
作者：
Rodin, P [1 ]
Schöll, E [1 ]
机构：
[1] Tech Univ Berlin, Inst Theoret Phys, D-10623 Berlin, Germany
来源：
PHYSICAL REVIEW B | 2005年 / 71卷 / 04期
关键词：
D O I：
10.1103/PhysRevB.71.047301
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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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