Some Peculiarities of Proton Transport in Quasi-One-Dimensional Hydrogen-Bonded Chains

Details Some Peculiarities of Proton Transport in Quasi-One-Dimensional Hydrogen-Bonded Chains Some Peculiarities of Proton Transport in Quasi-One-Dimensional Hydrogen-Bonded Chains

1999-09-17

arxiv.org/abs/cond-mat/9909264v1

Physics

Condensed Matter

Materials Science

21 pages, RevTeX, 9 eps figures

Scientific paper

10.1063/1.481464

The protonic conductivity in the hydrogen bonded chains is investigated theoretically in the framework of the two-stage transport model. The strong interactions with optical phonon stretching mode are considered. We obtain the transition from the insulator to the metal-type state from the temperature dependencies of the hopping conductivity and analyze the influence of the specific Grotthuss mechanism on the transition character. We investigate also the main peculiarities in the frequency dependencies of the band and hopping conductivity parts which appear due to above-mentioned two-stage process of the proton migration along the chain.

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