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Updated: Aug 21, 2026

Fabrication of Spatially Confined Complex Oxides
Published on: July 1, 2013
Direct observation of large electronic domains with memory effect in doped manganites
D D Sarma1, Dinesh Topwal, U Manju
1Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560012, India. sarma@sscu.iisc.ernet.in
Abstract:
We use a spatially resolved, direct spectroscopic probe for electronic structure with an additional sensitivity to chemical compositions to investigate high-quality single crystal samples of La(1/4)Pr(3/8)Ca(3/8)MnO3, establishing the formation of distinct insulating domains embedded in the metallic host at low temperatures. These domains are found to be at least an order of magnitude larger in size compared to previous estimates and exhibit memory effects on temperature cycling in the absence of any perceptible chemical inhomogeneity, suggesting long-range strains as the probable origin.
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