Phys. Rev. Lett. 95, 267210 (2005) [4 pages]Phase Separation in Jahn-Teller Systems with Localized and Itinerant ElectronsReceived 25 July 2005; published 27 December 2005 The phase diagram for doped manganites and related compounds is analyzed in terms of the Kondo-lattice model taking into account an interplay between electrons localized due to lattice distortions and those in the band states. It is shown that the number of itinerant charge carriers can be significantly lower than that implied by the doping level. The competition between the homogeneous (ferromagnetic or antiferromagnetic) and phase-separated states is discussed and a strong tendency to the phase separation was revealed for a wide doping range. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.267210
DOI:
10.1103/PhysRevLett.95.267210
PACS:
75.47.Lx, 64.75.+g, 71.30.+h, 75.30.−m
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