Surprising resistivity decrease in manganites with constant electronic density

A decrease of eight orders of magnitude in the resistance of (La0.5Ca0.5)zMnO3 has been detected when the electronic density is kept constant while the calcium content is modified by introducing cationic vacancies. This effect is related to the disappearance of the charge ordering state and the emer...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2013-12, Vol.25 (48), p.484002-484002
Main Authors: Cortés-Gil, R, Ruiz-González, M L, Alonso, J M, Martínez, J L, Hernando, A, Vallet-Regí, M, González-Calbet, J M
Format: Article
Language:English
Subjects:
Calcium
Calcium - chemistry
Cationic
Condensed matter
Constants
Density
Electrical resistivity
Electronics
Electrons
Magnetic Phenomena
Manganese Compounds - chemistry
Manganites
Oxides - chemistry
Temperature
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Summary:A decrease of eight orders of magnitude in the resistance of (La0.5Ca0.5)zMnO3 has been detected when the electronic density is kept constant while the calcium content is modified by introducing cationic vacancies. This effect is related to the disappearance of the charge ordering state and the emergence of an antiferromagnetic–ferromagnetic transition. Moreover, high values of the colossal magnetoresistance above room temperature are attained.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/25/48/484002