Electronic structure of the c(4 x 2) reconstructed Ge(001) surface

Details Electronic structure of the c(4 x 2) reconstructed Ge(001) surface Electronic structure of the c(4 x 2) reconstructed Ge(001) surface

2007-10-25

arxiv.org/abs/0710.4841v1

Chemical Physics Letters 449, 126-129 (2007)

Physics

Condensed Matter

Materials Science

4 pages, 3 figures, accepted by Chem. Phys. Lett

Scientific paper

10.1016/j.cplett.2007.10.060

We investigate the electronic structure of the c(4 x 2) reconstructed Ge(001) surface using band structure calculations based on density functional theory and the generalized gradient approximation. In particular, we take into account the details of surface reconstruction by means of well relaxed crystal structures. The surface electronic states are identified and the local density of states is compared to recent data from scanning tunneling spectroscopy. We obtain almost perfect agreement between theory and experiment for both the occupied and unoccupied states, which allows us to clarify the interpretation of the experimental data.

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