By means of band structure calculations within the density functional theory and the generalized gradient approximation, we investigate the electronic structure of self-organized Pt nanowires on the Ge(001) surface. In particular, we deal with a novel one-dimensional surface state confined in the nanowire array and clarify its origin. Due to large Pt contributions, the novel state is rather a mixed Ge-Pt hybrid state than a confined Ge surface state. Moreover, we compare our results to data from scanning tunneling microscopy.
- 73.20.-r electron states at surfaces and interfaces
- 73.20.At surface states, band structure, electron density of states
ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials