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Role of defects in the kink mechanism of state switching

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Abstract

State switching occurring via the kink mechanism in linear systems has been described considering the effect of defects forming centers of enhanced kink pair nucleation and obstacles for kink propagation. An equation describing the switching kinetics has been derived considering the stochastic nature of kink pair formation in time and the random distribution of defects in space. Using this equation, the average switching time has been calculated as a function of the defect density and delay times caused by defects, and the ranges of parameters with domination of this or that defect type have been determined. The theory has been applicable to magnetic nanowires, dislocations, biological macromolecules, and many other systems.

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Authors and Affiliations

  1. Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, Moscow, 119333, Russia

    B. V. Petukhov

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  1. B. V. Petukhov
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Correspondence to B. V. Petukhov.

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Original Russian Text © B.V. Petukhov, 2012, published in Fizika Tverdogo Tela, 2012, Vol. 54, No. 12, pp. 2366–2371.

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Petukhov, B.V. Role of defects in the kink mechanism of state switching. Phys. Solid State 54, 2491–2496 (2012). https://doi.org/10.1134/S106378341212027X

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