Tip-related electronic artifacts in scanning tunneling spectroscopy
- 15 March 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 43 (8) , 6746-6749
- https://doi.org/10.1103/physrevb.43.6746
Abstract
The electronic spectrum of the probe tip is found to play a crucial role in measurements of scanning tunneling spectroscopy. Tips with a nonuniform density of states can produce highly convoluted I-V curves, even if they produce atomic-resolution topographic images. In some cases, tips with a strongly peaked density of states away from the Fermi level can shift the apparent energy of spectral features of the sample by as much as 1 eV.Keywords
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