| Autor: |
Dzero, M.O., Gor'kov, L.P., Kresin, V.Z. |
| Zdroj: |
The European Physical Journal B - Condensed Matter; April 2000, Vol. 14 Issue: 3 p459-471, 13p |
| Abstrakt: |
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. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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