Commensurate to incommensurate charge ordering and its real-space images in La0.5Ca0.5MnO3

C. H. Chen, S. W. Cheong

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Abstract

The antiferromagnetic to ferromagnetic transition in La0.5Ca0.5MnO3 is accompanied by a commensurate to incommensurate charge-ordering transition. The presence of incommensurate charge correlation in the ferromagnetic phase is a remarkable interplay between charge and spin in double-exchange ferromagnets. Furthermore, a dark-field imaging technique has provided real-space images of charge-ordered domains revealing discommensurations inside the nearly commensurate domains. Local density fluctuations of discommensurations are responsible for the similar variations of the charge-ordering wave vector.

Original languageEnglish (US)
Pages (from-to)4042-4045
Number of pages4
JournalPhysical Review Letters
Volume76
Issue number21
DOIs
StatePublished - May 20 1996

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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