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Peculiarities in low temperature properties of doped manganites A1-xBxMnO3

  • M.O. Dzero
  • L.P. Gor'kov
  • V.Z. Kresin
Article

Abstract:

The phase diagram and low temperature properties of the doped manganites A1-xBxMnO3 are discussed for the concentrations \(x \le 0.4\). The transition from insulating antiferromagnetic to metallic ferromagnetic state at \({x_{cr}} \simeq 0.16\) is treated by means of percolation theory. The unifying description of insulating and metallic states is presented. The undoped manganite is a band insulator consisting of ferromagnetic layers, which are coupled antiferromagnetically along the c direction with a low Néel temperature. The metallic phase can be described by the two-band Fermi liquid picture. The behavior of conductivity, spin wave excitations, etc. is analyzed and the comparison with experimental data is carried out.

PACS. 72.15.Gd Galvanomagnetic and other magnetotransport effects - 75.30.Ds Spin waves 

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Copyright information

© EDP Sciences, Springer-Verlag, Società Italiana di Fisica 2000

Authors and Affiliations

  • M.O. Dzero
    • 1
  • L.P. Gor'kov
    • 1
  • V.Z. Kresin
    • 2
  1. 1.National High Magnetic Field LaboratoryFlorida State UniversityTallahasseeUSA
  2. 2.Lawrence Berkeley LaboratoryUniversity of CaliforniaBerkeleyUSA

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