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Updated: May 15, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
A subKelvin scanning probe microscope for the electronic spectroscopy of an individual nano-device
T Quaglio1, F Dahlem, S Martin
1Institut Néel, CNRS, Grenoble INP and Université Joseph Fourier, 25 rue des Martyrs, BP 166, 38042 Grenoble, France.
Abstract:
We present a combined scanning force and tunneling microscope working in a dilution refrigerator that is optimized for the study of individual electronic nano-devices. This apparatus is equipped with commercial piezo-electric positioners enabling the displacement of a sample below the probe over several hundred microns at very low temperature, without excessive heating. Atomic force microscopy based on a tuning fork resonator probe is used for cryogenic precise alignment of the tip with an individual device. We demonstrate the local tunneling spectroscopy of a hybrid Josephson junction as a function of its current bias.
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