K. Shimakawa and F. Abdel-Wahab [Appl. Phys. Lett. 70, 652 (1997)] have reported that electrical conductivity in chalcogenide glasses obeys the Meyer–Neidel (MN) rule: σ=σ00eΔE/EMNe−ΔE/kT. They also found that σ00 increases extremely rapidly as a function of EMN, the MN energy. Using Emin’s model for optical phonon induced electron hopping, we show that such a result is in accordance with the multiexcitation model for the origin of the MN rule.
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Yelon et al. (1997) studied this question.
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