Anomalous high mobility in LaAlO3/SrTiO3 nanowires.

Irvin, Patrick; Veazey, Joshua P; Cheng, Guanglei; Lu, Shicheng; Bark, Chung-Wung; Ryu, Sangwoo; Eom, Chang-Beom; Levy, Jeremy · Nano Lett · 2013

basic_science · Level V

Where this comes from

Abstract

Nanoscale control of the metal-insulator transition at the interface between LaAlO(3) and SrTiO(3) provides a pathway for reconfigurable, oxide-based nanoelectronics. Four-terminal transport measurements of LaAlO(3)/SrTiO(3) nanowires at room temperature (T = 300 K) reveal an equivalent 2D Hall mobility greatly surpassing that of bulk SrTiO(3) and approaching that of n-type Si nanowires of comparable dimensions. This large enhancement of mobility is relevant for room-temperature device applications.