title: Reemergent metal-insulator transitions in manganites exposed with spatial confinement.
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.
authors.affiliation: Materials Sciences and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
authors.forename: T Z
authors.initials: TZ
authors.lastname: Ward
authors.forename: S
authors.initials: S
authors.lastname: Liang
authors.forename: K
authors.initials: K
authors.lastname: Fuchigami
authors.forename: L F
authors.initials: LF
authors.lastname: Yin
authors.forename: E
authors.initials: E
authors.lastname: Dagotto
authors.forename: E W
authors.initials: EW
authors.lastname: Plummer
authors.forename: J
authors.initials: J
authors.lastname: Shen