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Citation: Huang Yuan-He, Liu Ruo-Zhuang. Temperature Dependence of Conductivity for Quasi-one Dimensional Organic Charge Transfer Crystal[J]. Acta Physico-Chimica Sinica, ;1992, 8(06): 728-731. doi: 10.3866/PKU.WHXB19920603 shu

Temperature Dependence of Conductivity for Quasi-one Dimensional Organic Charge Transfer Crystal

1.
Department of Chemistry, Beijing Normal University, Beijing 100875

Received Date: 1 June 1992
Available Online: 15 December 1992

One class of conducting molecular crystals is consisted of the charge transfer molecules crystallizing in segregated stacks of donor and acceptor, such as TTF-TCNQ and its analogues. They behave as quasi-one dimensional conductors. The ex-perimental works gave an approximate law that σ~(-1) increases as T~2 at the temperature range T_p<T<250 K for TTF-TCNQ and TSeF-TCNQ where T_P is phase transition temperature. In this work, we investigated the influence of electron-phonon interaction on the behavior of charge carriers by deformation potential theory. By this theory, only the scattering of electrons by longitudinal acoustic wave is considered. And the interaction matrix element H_(k'k) has been derived to be
|H_(k'k)|~2=E_1~2/2LC ...
- Electron-phonon interaction; One dimensional charge transfer crystal; Temperature dependence of conductivity
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