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Updated: Jun 8, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
Environment-assisted tunneling as an origin of the Dynes density of states
J P Pekola1, V F Maisi, S Kafanov
1Low Temperature Laboratory, Aalto University, P.O. Box 13500, FI-00076 Aalto, Finland.
Abstract:
We show that the effect of a high-temperature environment in current transport through a normal metal-insulator-superconductor tunnel junction can be described by an effective density of states in the superconductor. In the limit of a resistive low-Ohmic environment, this density of states reduces into the well-known Dynes form. Our theoretical result is supported by experiments in engineered environments. We apply our findings to improve the performance of a single-electron turnstile, a potential candidate for a metrological current source.
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