Local density of states from constant-current tunneling spectra
- 4 September 2009
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 80 (12) , 125402
Abstract
Scanning tunneling spectroscopy of the differential conductance is performed at constant current and at constant distance. These modes of operation significantly affect peak positions and line shapes in spectra as well as patterns in spatial maps of the differential conductance. A normalization procedure for constant-current data, which relies on experimental current-distance data, is shown to yield spectral information on the local density of states.Keywords
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