Dynamic conductivity of one-dimensional ion conductors. Impedance, Nyquist diagrams

• Main Authors: I.V. Stasyuk, R.Ya. Stetsiv
• Format: Article
• Language: English
• Published: Institute for Condensed Matter Physics 2016-12-01
• Series: Condensed Matter Physics
• Subjects: ion conductor; hard-core boson model; Drude weight; dynamic conductivity; Nyquist diagrams
• Online Access: http://dx.doi.org/10.5488/CMP.19.43704

Dynamic conductivity of the one-dimensional ion conductor is investigated at different values of the interaction constant between particles and the modulating field. The consideration is based on the hard-core boson lattice model. Calculations are performed for finite one-dimensional cluster using the exact diagonalization method. Frequency dependence of the dynamic conductivity and behaviour of its static component (Drude weight) in the charge-density-wave (CDW) and superfluid (SF) phases are studied. Frequency dispersion of impedance and loss tangent is calculated; the Nyquist diagrams are built and analyzed.