Ferromagnetic insulating phase in Pr{1-x}Ca{x}MnO3

R. Kajimoto; H. Mochizuki; H. Yoshizawa; S. Okamoto; S. Ishihara

doi:10.1016/S0921-4526(02)02629-7

Ferromagnetic insulating phase in Pr{1-x}Ca{x}MnO3

Strongly Correlated Electrons 2009-11-10 v1

Authors: R. Kajimoto , H. Mochizuki , H. Yoshizawa , S. Okamoto , S. Ishihara

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Abstract

A ferromagnetic insulating (FM-I) state in Pr0.75Ca0.25MnO3 has been studied by neutron scattering experiment and theoretical calculation. The insulating behavior is robust against an external magnetic field, and is ascribed to neither the phase separation between a ferromagnetic metallic (FM-M) phase and a non-ferromagnetic insulating one, nor the charge ordering. We found that the Jahn-Teller type lattice distortion is much weaker than PrMnO3 and the magnetic interaction is almost isotropic. These features resembles the ferromagnetic metallic state of manganites, but the spin exchange interaction J is much reduced compared to the FM-M state. The theoretical calculation based on the staggered type orbital order well reproduces several features of the spin and orbital state in the FM-I phase.

Keywords

manganites magnetic phase transitions magnetic structure

Cite

@article{arxiv.cond-mat/0306631,
  title  = {Ferromagnetic insulating phase in Pr{1-x}Ca{x}MnO3},
  author = {R. Kajimoto and H. Mochizuki and H. Yoshizawa and S. Okamoto and S. Ishihara},
  journal= {arXiv preprint arXiv:cond-mat/0306631},
  year   = {2009}
}

Comments

REVTeX4, 10 pages, 9 figures

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