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Updated: Jul 3, 2026

Fabrication of Spatially Confined Complex Oxides
Published on: July 1, 2013
Reemergent metal-insulator transitions in manganites exposed with spatial confinement
T Z Ward1, S Liang, K Fuchigami
1Materials Sciences and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
Abstract:
The metal-insulator transition is characterized as a single peak in the temperature-dependent resistivity measurements; exceptions to this have never been seen in any single crystal material system. We show that by reducing a single crystal manganite thin film to a wire with a width comparable to the mesoscopic phase-separated domains inherent in the material, a second and robust metal-insulator transition peak appears in the resistivity versus temperature measurement. This new observation suggests that spatial confinement is a promising route for the discovery of emergent physical phenomena in complex oxides.
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