Reemergent Metal-Insulator Transitions in Manganites Exposed with Spatial Confinement

Journal Article · Tue Jan 01 04:00:00 EST 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.100.247204· OSTI ID:971221

Ward, Thomas Z ^[1]; Liang, Shuhua ^[1]; Fuchigami, Kenji ^[1]; Yin, Lifeng ^[1]; Dagotto, Elbio R ^[1]; Plummer, E. W. ^[2]; Shen, Jian ^[1]

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1. ORNL
2. University of Tennessee, Knoxville (UTK)

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.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 971221
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 24 Vol. 100; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONFINEMENT
MONOCRYSTALS
OXIDES
PHYSICS
TEMPERATURE MEASUREMENT
THIN FILMS