Orbital order-disorder transition in doped perovskite manganites: influence of intrinsic octahedral-site distortion

Details Orbital order-disorder transition in doped perovskite manganites: influence of intrinsic octahedral-site distortion Orbital order-disorder transition in doped perovskite manganites: influence of intrinsic octahedral-site distortion

2009-12-30

arxiv.org/abs/0912.5432v1

Physics

Condensed Matter

Strongly Correlated Electrons

13 pages including 4 figures; pdf only; submitted to Phys. Rev. B

Scientific paper

The orbital order-disorder transition temperature (T_OO) versus tolerance factor (t) plot switches from monotonic to non-monotonic beyond a doping level (x) ~ 10 atom% in a family of R(1-x)A(x)MnO3 systems(R = La, Pr, Nd; A = Ca, Sr; x = 0.0-0.2). T_OO reaches maximum at a 'doping-dependent' critical tolerance factor t_C(x) (for 0.1

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