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Analysis of a -graphite intercalate surface by thermovoltage scanning tunneling microscopy
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View: Figures


Image of FIG. 1.
FIG. 1.

Raman spectra showing doublets with two peaks at 1586 and at .

Image of FIG. 2.
FIG. 2.

Area of about of the -graphite intercalate. The topography is shown on the left side [see (a)], the thermovoltage [see (b)] on the right side. A strong contrast between different areas is found for the thermovoltage. The cross-section 1 and cross-section 2 (see Fig. 3) reveal different correlations between the more HOPG-like and the SeCl4-GIC layers.

Image of FIG. 3.
FIG. 3.

(a) represents cross-section 1 taken in Fig. 2. It shows a cut across the three areas B, C, and D in the topography (solid) and thermovoltage (dashed). Subfigure (b) shows cross-section 2 across a rather smooth transition from area A to B in topography (solid) and thermovoltage (dashed).

Image of FIG. 4.
FIG. 4.

Model to explain different features in the thermovoltage and the topography. The areas marked with A, B, C, and D correspond to the steps with the same labels in Fig. 2. The model shows a third stage graphite intercalation compound as suggested by Raman spectroscopy.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Analysis of a SeCl4-graphite intercalate surface by thermovoltage scanning tunneling microscopy