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Proton Hopping Conductivity in Quasi‐One‐Dimensional Hydrogen‐Bonded Chains
Author(s) -
Pavlenko N.I.
Publication year - 2000
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(200003)218:1<295::aid-pssb295>3.0.co;2-c
Subject(s) - delocalized electron , proton , conductivity , proton transport , phonon , hydrogen , condensed matter physics , maxima , coupling (piping) , materials science , chemical physics , character (mathematics) , molecular physics , chemistry , physics , quantum mechanics , art , performance art , metallurgy , art history , geometry , mathematics
We study the frequency‐ and temperature‐dependent protonic hopping conductivity σ(ω, T ) in hydrogen‐bonded chains on the basis of a two‐stage transport model where the interactions with optical phonon stretching modes are taken into account. The analytical calculations performed using the Kubo theory reveal the two‐step character of the proton delocalization in the chains on heating. It is also shown that the specific Grotthuss transport mechanism manifests itself in the appearance of two distinct peaks in the frequency dependences of σ and the heights of these maxima depend strongly on the proton–phonon coupling strengths.