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Scanning tunnelling microscopy and spectroscopy on Cu(111) and Au(111)
Author(s) -
Brodde A.,
Tosch St.,
Neddermeyer H.
Publication year - 1988
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.1988.tb01406.x
Subject(s) - monatomic gas , scanning tunneling microscope , spectroscopy , quantum tunnelling , scanning tunneling spectroscopy , condensed matter physics , scanning electron microscope , microscopy , fermi level , materials science , analytical chemistry (journal) , chemistry , electron , physics , optics , organic chemistry , chromatography , quantum mechanics
SUMMARY 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.