Effect of Temperature on Conductivity Decay of LaAlO<sub>3</sub>/SrTiO<sub>3</sub> Nanostructures
ORAL
Abstract
The technique of conductive atomic force microscopy (c-AFM) lithography is capable of creating conductive LaAlO3/SrTiO3 (LAO/STO) nanostructures by controlling the charge state of the LAO surface [1]. It is also known that a “water cycle” mediates conductivity at the oxide interface [2] and causes self-erasure of nanostructures. Here we describe experiments in which we repeatedly expose written devices to temperatures above T=300 K and investigate the conductance decay for both 1D and 2D structures. The properties of LAO/STO nanostructures at elevated temperatures is helpful for understanding the water cycle in more detail, and has practical implications for device applications.
[1] C. Cen et al., Science 323, 1026-1030 (2009).
[2] F. Bi et al., Appl. Phys. Lett. 97, 173110 (2010).
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Presenters
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Aaron S Greenberg
University of Pittsburgh
Authors
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Aaron S Greenberg
University of Pittsburgh
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Dengyu Yang
University of Pittsburgh, Pittsburgh Quantum Institute
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Philip H Shenk
University of Pittsburgh
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Joseph A Albro
University of Pittsburgh
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Muqing Yu
University of Pittsburgh
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Ki-Tae Eom
University of Wisconsin - Madison, University of Wisconsin-Madison, Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA, University of Wisconsin Madison
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Chang Beom Eom
Materials Science and Engineering, University of Wisconsin-Madison, University of Wisconsin-Madison, University of Wisconsin - Madison
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Patrick R Irvin
University of Pittsburgh
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Jeremy Levy
University of Pittsburgh, University of Pittsburgh, Department of Physics and Astronomy, Pittsburgh, PA 15260, USA