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arXiv · 1006.0835

Imaging Pauli repulsion in scanning tunneling microscopy

C. Weiss·C. Wagner·C. Kleimann·M. Rohlfing·F. S. Tautz·R. Temirov
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Abstract

A scanning tunneling microscope (STM) has been equipped with a nanoscale force sensor and signal transducer composed of a single D2 molecule that is confined in the STM junction. The uncalibrated sensor is used to obtain ultra-high geometric image resolution of a complex organic molecule adsorbed on a noble metal surface. By means of conductance-distance spectroscopy and corresponding density functional calculations the mechanism of the sensor/transducer is identified. It probes the short-range Pauli repulsion and converts this signal into variations of the junction conductance.

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C. Weiss, C. Wagner, C. Kleimann, M. Rohlfing, F. S. Tautz, R. Temirov. 2010-06-04. Imaging Pauli repulsion in scanning tunneling microscopy. https://doi.org/10.1103/physrevlett.105.086103

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