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Updated: Jul 18, 2026

Fabrication of Spatially Confined Complex Oxides
Published on: July 1, 2013
Giant discrete steps in metal-insulator transition in perovskite manganite wires
Hong-Ying Zhai1, J X Ma, D T Gillaspie
1Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
Abstract:
Optical lithography is used to fabricate LPCMO wires starting from a single (La(5/8-0.3)Pr(0.3))Ca3/8MnO3 (LPCMO) film epitaxially grown on a LaAlO3(100) substrate. As the width of the wires is decreased, the resistivity of the LPCMO wires exhibits giant and ultrasharp steps upon varying temperature and magnetic field in the vicinity of the metal-insulator transition. The origin of the ultrasharp transitions is attributed to the effect of spatial confinement on the percolative transport in manganites.
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