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Related Experiment Video

Updated: Jun 20, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

Interpretation of transition voltage spectroscopy.

Everardus H Huisman¹, Constant M Guédon, Bart J van Wees

¹Physics of Nanodevices, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.

|August 19, 2009

Summary

Transition voltage spectroscopy (TVS) can determine molecular positions in devices without extreme voltages. A new model validates TVS as a tool and differentiates molecular from vacuum junctions.

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Area of Science:

Molecular electronics
Spectroscopy
Condensed matter physics

Background:

Transition voltage spectroscopy (TVS) offers a promising method for probing molecular-level details in electronic devices.
Current models, like the Simmons model, have limitations in accurately describing experimental observations in molecular junctions.

Purpose of the Study:

To investigate the underlying physics of TVS in molecular devices.
To reconcile theoretical models with experimental data for TVS.
To establish TVS as a reliable spectroscopic tool for molecular electronics.

Main Methods:

Theoretical analysis of the physics governing TVS.
Comparison of the Simmons model with experimental data.
Development and application of a coherent molecular transport model.

Main Results:

The widely used Simmons model is found to be inconsistent with experimental TVS data.
A coherent molecular transport model successfully explains and justifies the principles of TVS.
TVS is shown to be a potential key technique for distinguishing between molecular junctions and vacuum tunnel junctions.

Conclusions:

The theoretical framework for TVS needs refinement beyond the Simmons model.
A coherent transport model provides a valid basis for utilizing TVS as a spectroscopic probe.
TVS holds significant potential for advancing the characterization of molecular electronic components.