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Title: Creation of a two-dimensional electron gas and conductivity switching of nanowires at the LaAlO{sub 3}/SrTiO{sub 3} interface grown by 90{sup o} off-axis sputtering

Two-dimensional electron gas (2DEG) formed at the interface between two oxide band-insulators LaAlO{sub 3} and SrTiO{sub 3} raises the possibility to develop oxide nanoelectronics. Here, we report the creation of a 2DEG at the LaAlO{sub 3}/SrTiO{sub 3} heterointerfaces grown by 90° off-axis sputtering which allows uniform films over a large area. The electrical transport properties of the LaAlO{sub 3}/SrTiO{sub 3} heterointerface are similar to those grown by pulsed laser deposition. We also demonstrate room-temperature conductive probe-based switching of quasi-one-dimensional structures. This work demonstrates that a scalable growth process can be used to create the two-dimensional electron gas system at oxide heterointerfaces.
Authors:
; ; ; ; ; ; ;  [1] ; ;  [2] ; ;  [3]
  1. Department of Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706 (United States)
  2. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)
  3. Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)
Publication Date:
OSTI Identifier:
22218223
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 7; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 36 MATERIALS SCIENCE; ALUMINATES; ELECTRIC CONDUCTIVITY; ELECTRON GAS; ENERGY BEAM DEPOSITION; LANTHANUM COMPOUNDS; LASER RADIATION; OXIDES; QUANTUM WIRES; SPUTTERING; STRONTIUM TITANATES