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Structurally induced FEES from nanotips: implications for scanning tunneling spectroscopy

Authors
Journal
Surface Science Letters
0167-2584
Publisher
Elsevier
Publication Date
Volume
293
Issue
3
Identifiers
DOI: 10.1016/0167-2584(93)90226-9

Abstract

Abstract Recent theoretical studies and experimental data show the existence of energy levels the apex atom of nanotips. We report here experimental measurements, by field emission electron spectroscopy (FEES), of strong modifications of the local density of states for varying atomic configurations of the nanotips. The local density of states specific to each protrusion must then be considered in interpreting scanning tunneling microscopy and scanning tunneling spectroscopy experiments with atomic resolution instead of the commonly used free-electron model.

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