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Local Potential at Atomically Abrupt Oxide Interfaces by Scanning Probe Microscopy

Published online by Cambridge University Press:  10 February 2011

Sergei V. Kalinin  and
Dawn A. Bonnell
Sergei V. Kalinin
Affiliation:
Dept. Mat. Sci. & Eng., The University of Pennsylvania, 3231 Walnut St. Philadelphia, PA 19104
Dawn A. Bonnell
Affiliation:
Dept. Mat. Sci. & Eng., The University of Pennsylvania, 3231 Walnut St. Philadelphia, PA 19104
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Abstract

Electrostatic force microscopy and scanning surface potential microscopy are combined to quantify nanometer scale field variations in the vicinity of grain boundaries in donor doped σ15 SrTiO3 bicrystals. An analytical electrostatic model is used to develop a procedure for determining interface potential from measurements made above the surface. Grain boundary potentials and depletion widths determined by both techniques are in excellent agreement despite the fundamental difference in imaging mechanisms. The comparison confirms the analytical approach and illustrates use of scanning probes to image interface properties.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 586: Symposium M – Interfacial Engineering for Optimized Properties II , 1999 , 15
Copyright
Copyright © Materials Research Society 2000

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References

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