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Journal of Physical Studies 13(2), Article 2701 [9 pages] (2009)
DOI: https://doi.org/10.30970/jps.13.2701 ONE-PARTICLE SPECTRUM AND PHASE TRANSITION IN IONIC PAULI CONDUCTORI. V. Stasyuk, I. R. Dulepa
Institute for Condensed Matter Physics of the National Academy of
Sciences of Ukraine, |
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A microscopic simple noninteracting model for the description of the energy spectrum of ion subsystem in Pauli ionic conductor is considered. Phase diagram of the model is obtained with taking into account the possibility of transition into phase, that includes ‟condensate” in the mean field approximation. The temperature dependence of ionic hopping parameter caused by thermal activation is taken into account too. The one-particle spectrum is calculated in random phase approximation. The frequency dependence of the density of states in different phases is investigated in a wide range of temperatures by considering the example of quasi-one-dimensional and three-dimensional systems.
PACS number(s): 75.10.Pq, 66.30.Dn, 66.10.Ed