Limited local electron-lattice coupling in manganites

D. Sanchez; M. J. Calderon; J. Sanchez-Benitez; A. J. Williams; J. P. Attfield; P. A. Midgley; N. D. Mathur

doi:10.1103/PhysRevB.77.092411

Limited local electron-lattice coupling in manganites

Strongly Correlated Electrons 2008-03-27 v1

Authors: D. Sanchez , M. J. Calderon , J. Sanchez-Benitez , A. J. Williams , J. P. Attfield , P. A. Midgley , N. D. Mathur

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Abstract

(Pr,Ca)MnO3 is the archetypal charge-ordered manganite, but in Pr0.48Ca0.52MnO3 we find (using convergent-beam electron diffraction and dark-field images) that the superlattice period is locally incommensurate with respect to the parent lattice, and that the superlattice orientation possesses significant local variations. This suggests that local electron-lattice coupling never overwhelmingly dominates the rich physics of manganites, even in the most extreme scenarios that produce the largest colossal magnetoresistance effects.

Keywords

manganites

Cite

@article{arxiv.0801.4626,
  title  = {Limited local electron-lattice coupling in manganites},
  author = {D. Sanchez and M. J. Calderon and J. Sanchez-Benitez and A. J. Williams and J. P. Attfield and P. A. Midgley and N. D. Mathur},
  journal= {arXiv preprint arXiv:0801.4626},
  year   = {2008}
}

Comments

9 pages, 4 figures; accepted in Physical Review B

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