Role of disorder in phase coexistence in manganites: Noise in layered films

Akilan Palanisami, Maitri Warusawithana, James N Eckstein, M. B. Weissman, N. D. Mathur

Research output: Contribution to journalArticlepeer-review

Abstract

Films of La2 3 Ca1 3 Mn O3 were prepared via atomic layer-by-layer epitaxy both as standard solid-solution alloys and as A -site-ordered superlattices of LaMn O3 and CaMn O3 layers. The transport properties were similar, although with a shifted and broadened metal-insulator transition temperature TC in the ordered material. Transport noise near TC was also similar, in both cases revealing a narrow peak in noise magnitude versus temperature. The phase coexistence region near TC has little dependence on the intrinsic disorder of the chemical alloy.

Original languageEnglish (US)
Article number024454
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number2
DOIs
StatePublished - Jul 1 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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