The local Jahn-Teller effect in (La/Sr){sub n+1}Mn{sub n}O{sub 3n+1} | Zendy

Despo Antoni Louca | Zendy; G. H. Kwei | Zendy; T. Egami | Zendy

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The local Jahn-Teller effect in (La/Sr){sub n+1}Mn{sub n}O{sub 3n+1}

Author(s) -

Despo Antoni Louca,

G. H. Kwei,

T. Egami

Publication year - 1998

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/304020

Subject(s) - polaron , jahn–teller effect , condensed matter physics , magnetism , lattice (music) , magnetoresistance , colossal magnetoresistance , coupling (piping) , materials science , physics , chemistry , magnetic field , electron , ion , quantum mechanics , acoustics , metallurgy

Lattice polarons form an important constituent in the mechanism of magnetism and transport of the (La/Sr){sub n+1}Mn{sub n}O{sub 3n+1} (for n = 2 and {infinity}) colossal magnetoresistance manganites. The coupling of the polaronic distortions to the local Jahn-Teller (JT) effect has been characterized by the pulsed neutron pair density function (PDF) analysis. Distortions of equal magnitude to the ones found in perovskites arising from a JT effect are found in the 2-dimensional layer crystals. The coupling of the distortions to the lattice is similar in both systems suggesting that lattice polarons are formed independently to the crystal dimensionality

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