Local Determination of the Stacking-Sequence of Layered Materials

Copyright © (1998) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics

The ability to modify the stacking sequence of ultrathin films offers a unique way to change either the interaction strength or the doping, but demands a careful control of each atomic monolayer. Progress is hampered by the lack of a direct method that allows differentiation on a local scale between the various terminating layers of a crystal. Here, the combination of a vacuum annealing process and friction force microscopy reveals this local distinction on a SrTiO(3) surface. Using the friction contrast, we find how the terminating layer of a single crystal profoundly influences the terrace edge structure.

By: J. Fompeyrine, R. Berger, H. P. Lang, J. Perret, E. Machler, C. Gerber, J. P. Locquet

Published in: Applied Physics Letters, volume 71, (no 14), pages 1697-9 in 1998

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