Synthesis, spectroscopic characterization, and observation of massive metal-insulator transitions in nanowires of a nonstoichiometric vanadium oxide bronze.
Metal-insulator transitions in strongly correlated materials, induced by varying either temperature or dopant concentration, remain a topic of enduring interest in solid-state chemistry and physics owing to their fundamental importance in answering longstanding questions regarding correlation effects. We note here the unprecedented observation of a four-orders-of-magnitude metal-insulator transition in single nanowires of delta-K(x)V(2)O(5), when temperature is varied, which thus represents a rare new addition to the pantheon of materials exhibiting pronounced metal-insulator transitions in proximity to room temperature.
Department of Chemistry, University at Buffalo, Buffalo, New York 14260-3000, USA.
Christopher J
CJ
Patridge
Tai-Lung
TL
Wu
Cherno
C
Jaye
Bruce
B
Ravel
Esther S
ES
Takeuchi
Daniel A
DA
Fischer
G
G
Sambandamurthy
Sarbajit
S
Banerjee