Magnetic Transition Temperature of (La,Sr)MnO$_3$

Details Magnetic Transition Temperature of (La,Sr)MnO$_3$ Magnetic Transition Temperature of (La,Sr)MnO$_3$

1995-05-03

arxiv.org/abs/cond-mat/9505009v2

J. Phys. Soc. Jpn. 64 (1995) 2754

Physics

Condensed Matter

7 pages, 1 PS file with 3 figures appended at the end, LaTeX

Scientific paper

10.1143/JPSJ.64.2754

Using the Kondo lattice model with classical spins in infinite dimension, magnetic phase transition in the perovskite-type $3d$ transition-metal oxide (La,Sr)MnO$_3$ is theoretically studied. On the Bethe lattice, the self-consistency equations are solved exactly. Curie temperatures at the region of double-exchange ferromagnetism $0.1 < x < 0.25$ as well as the Neel temperature at $x=0$ are well reproduced quantitatively. Pressure effect on the Curie temperature is also discussed.

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