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Peculiarities in Low Temperature Properties of Doped Manganites A1-xBxMnO3

M. O. Dzero·L. P. Gor'kov·V. Z. Kresin
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Abstract

The phase diagram and low temperature properties of the doped manganites A1-xBxMnO3 are discussed for the concentrations x < 0.4. The transition from insulating antiferromagnetic to metallic ferromagnetic state at x_cr = 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 Neel 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.

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M. O. Dzero, L. P. Gor'kov, V. Z. Kresin. 1999-12-06. Peculiarities in Low Temperature Properties of Doped Manganites A1-xBxMnO3. https://doi.org/10.1007/s100510051054

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