The effect of proton interactions on the conductivity behavior in systems with superionic phases
The effect of proton interactions on the conductivity behavior in systems with superionic phases
复制标题
质子相互作用对超离子相系统电导率行为的影响
DOI：
10.1063/1.1348030
复制
发表时间：
2001
影响因子：
4.4
通讯作者：
I. Stasyuk
中科院分区：
文献类型：
--
作者：
N. Pavlenko;I. Stasyuk
在两阶段输运模型的基础上，从理论上研究了具有强质子关联的氢键体系的质子电导率。氢键形成时最近离子基团的扭曲是产生强的质子-声子耦合和极化子效应的原因。作为一个例子，我们计算了在(001)导电面上具有高质子迁移率的M3H(XO4)2类晶体的电导率。我们分析了从无序上子态到有序态转变附近的电导率及其键间和键内贡献的温度依赖性。我们还研究了由于质子相互作用而出现的电导率的频率依赖性的主要特征，并将我们的结果与以前对非相互作用质子链所得到的结论进行了比较。
The proton conductivity in the hydrogen-bonded systems with strong correlations between protons is investigated theoretically in the context of the two-stage transport modeling approach. The distortions of the nearest ionic groups at the formation of the hydrogen bond are shown to be the reason for the strong proton–phonon coupling and polaronic effect. We evaluate as an example the conductivity for M3H(XO4)2-class of crystals with high proton mobility in (001) conducting planes. We analyze the temperature dependencies of the conductivity and its interbond and intrabond contributions in the vicinity of the transition from the disordered superionic to the ordered state. We investigate also the main peculiarities in the frequency dependencies of the conductivity appearing due to the proton interactions and compare our results with the previous conclusions obtained for the chains of noninteracting protons.