Publication Type
Journal
Journal Name
Physical Review Letters
Publication Date
Page Number
247204
Volume
100
Issue
24
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.
