Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2007-12-29
JETP Lett. 86, 321- 327 (2007)
Physics
Condensed Matter
Strongly Correlated Electrons
6 pages, 3 figures
Scientific paper
The problem of constructing the kinetic equation with the description of motion of a hole in systems with strong spin- hole interaction (such as high- temperature superconductors) in terms of the spin polaron has been considered in the framework of the regular antiferromagnetic $s-d$ model. It has been shown by the example of the electrical resistivity that kinetics is determined by the properties of the bands of the spin polaron (rather than "bar hole") and their quasiparticle residues $Z_{k}$. The cases of low and optimal doping of the $CuO_{2}$ plane have been considered. It has been shown that the rearrangement of the spectrum of the lower polaron band, as well as the strong doping dependence of the quasiparticle residues $Z_{k}$ is decisive in the unified consideration of these cases.
Barabanov A. F.
Belemuk A. M.
Maksimov L. A.
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