A model for the phase separation controlled by doping and the internal chemical pressure in different cuprate superconductors

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dc.creatorKugel, K. I.
dc.creatorRakhmanov, A. L.
dc.creatorSboychakov, A. O.
dc.creatorPoccia, Nicola
dc.creatorBianconi, Antonio
dc.date2008-09-24
dc.date2008-10-25
dc.date.accessioned2026-07-07T10:13:11Z
dc.date.available2026-07-07T10:13:11Z
dc.descriptionIn the framework of a two-band model, we study the phase separation regime of different kinds of strongly correlated charge carriers as a function of the energy splitting between the two sets of bands. The narrow (wide) band simulates the more localized (more delocalized) type of charge carriers. By assuming that the internal chemical pressure on the CuO$_2$ layer due to interlayer mismatch controls the energy splitting between the two sets of states, the theoretical predictions are able to reproduce the regime of phase separation at doping higher than 1/8 in the experimental pressure-doping-$T_c$ phase diagram of cuprates at large microstrain as it appears in overoxygenated La$_2$CuO$_4$.
dc.description8 pages, 5 figures, submitted to Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/0809.4219
dc.identifierhttp://arxiv.org/abs/0809.4219
dc.identifierPhys. Rev. B 78, 165124 (2008)
dc.identifierdoi:10.1103/PhysRevB.78.165124
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/172443
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleA model for the phase separation controlled by doping and the internal chemical pressure in different cuprate superconductors
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