Oxide Nanoelectronics on Demand
Cheng Cen,1
Stefan Thiel,2
Jochen Mannhart,2
Jeremy Levy1*
Electronic confinement at nanoscale dimensions remains a central
means of science and technology. We demonstrate nanoscale lateral
confinement of a quasi–two-dimensional electron gas at
a lanthanum aluminate–strontium titanate interface. Control
of this confinement using an atomic force microscope lithography
technique enabled us to create tunnel junctions and field-effect
transistors with characteristic dimensions as small as 2 nanometers.
These electronic devices can be modified or erased without the
need for complex lithographic procedures. Our on-demand nanoelectronics
fabrication platform has the potential for widespread technological
application.
2 Experimental Physics VI, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, D-86135 Augsburg, Germany.
* To whom correspondence should be addressed. E-mail: jlevy{at}pitt.edu
