Scanning tunnelling microscopy and spectroscopy on Cu(111) and Au(111) |
| |
Authors: | A Brodde St Tosch H Neddermeyer |
| |
Abstract: | We have studied Cu(111) and Au(111) by means of scanning tunnelling microscopy and spectroscopy. The constant current topographies showed flat parts as well as regions with a high density of monoatomic steps (in particular on Au(111)). Local I/U characteristics have been determined at a fixed sample-tip distance in the range of ?10 V≤U≤10 V. They show a linear behaviour near the Fermi level and a nearly exponential dependency for larger values of U. Neither an influence of the sp-like surface states or an onset due to d electron contributions of the sample could be observed. |
| |
Keywords: | Scanning tunnelling microscopy Cu(111) Au(111) |
|