Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2009-07-07
Physics
Condensed Matter
Strongly Correlated Electrons
Scientific paper
The thermodynamics of the lattice model of intercalation of ions in crystals is considered in the mean field approximation. Pseudospin formalism is used for the description of interaction of electrons with ions and the possibility of hopping of intercalated ions between different positions is taken into account. Phase diagrams are built. It is shown that the effective interaction between intercalated ions can lead to phase separation or to appearance of modulated phase (it depends on filling of the electron energy band). At high values of the parameter of ion transfer the ionic subsystem can pass to the superfluid-like state.
Krasnov V. O.
Mysakovych T. S.
Stasyuk Ihor V.
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