https://doi.org/10.1140/epjb/e2008-00019-y
Confined Ge–Pt states in self-organized Pt nanowire arrays on Ge(001)
Institut für Physik, Universität Augsburg, 86135 Augsburg, Germany
Corresponding author: a udo.schwingenschloegl@physik.uni-augsburg.de
Received:
29
October
2007
Revised:
25
November
2007
Published online:
16
January
2008
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.
PACS: 73.20.-r – Electron states at surfaces and interfaces / 73.20.At – Surface states, band structure, electron density of states
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008
