Research Papers in Physics and Astronomy


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Published in Applied Surface Science (2008); doi:10.1016/j.apsusc.2008.01.061 Copyright © 2008 Elsevier B.V. Used by permission.


The layered In4Se3 system does have a bulk band structure (i.e. discernible and significant band dispersion) perpendicular to the cleavage plane. Band widths (the extent of dispersion) of 300 meV or more are observed, for In-p and Se-p weighted bands within the valence region, and is indicative of a bulk band structure. Two-dimensionality of state is clearly not conserved, and there must exist interactions between layers sufficient to support a bulk band structure.

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