Orbital order induced metal-insulator transition in (La,Ca)MnO3

Preprint

4 April 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0204103

Abstract

We present evidence that the insulator to metal transition in (La,Ca)MnO3 near x~0.2 is driven by the suppression of coherent Jahn-Teller distortions, originating from d type orbital ordering. The orbital ordered state is characterised by large long-range Q2 distortions below To*-o'. Above To*-o' we find evidence for coexistence between an orbital-ordered and -disordered state. This behaviour is discussed in terms of electronic phases of an orbital ordered insulating and orbital-disordered metallic states.

Keywords

METAL INSULATOR TRANSITION
INSULATOR TO METAL
ORBITAL ORDERED
INDUCED METAL
ORDER INDUCED
DISTORTIONS
MNO3

All Related Versions

Version 1, 2002-04-04, ArXiv
Published version: Physical Review Letters, 90 (6), 066403.

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