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1.
Science ; 328(5976): 318-9, 2010 Apr 16.
Article in English | MEDLINE | ID: mdl-20395502
2.
Science ; 319(5870): 1625-6, 2008 Mar 21.
Article in English | MEDLINE | ID: mdl-18356511
3.
Phys Rev Lett ; 88(12): 126402, 2002 Mar 25.
Article in English | MEDLINE | ID: mdl-11909484

ABSTRACT

The first direct observation of charge order of Ni(3+delta(')) and Ni(3-delta) by resonant x-ray scattering experiments in an epitaxial film of NdNiO3 is reported. A quantitative value of delta+delta(') = (0.45 +/- 0.04)e was obtained. The temperature dependence of the charge order deviates significantly from those of the magnetic moment and crystallographic structure. This might be an indication of a difference in their fluctuation time scales. These observations are discussed in terms of the temperature-driven metal-insulator transition in the RNiO3 family.

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