Quantifying fluctuations from the tunnelling differential conductance
Antonio M. Garcia-Garcia, Pedro Ribeiro
TL;DR
This paper examines the limitations of Dynes ansatz in nano-scale superconductors and introduces a generalized method to analyze thermal and quantum fluctuations in tunneling differential conductance measurements.
Contribution
It proposes a generalized approach extending Dynes ansatz to account for fluctuations in nano-scale superconductors, enhancing analysis accuracy in STM experiments.
Findings
Dynes ansatz has limitations in nano-scale regimes.
The generalized method captures thermal and quantum fluctuations.
Improved analysis of tunneling conductance in small superconductors.
Abstract
Dynes ansatz is a broadly utilized procedure to extract the superconducting energy gap from the tunnelling differential conductance, a quantity that is measured by scanning tunnelling microscopy (STM) techniques. In this letter we investigate the limit of applicability of this ansatz in nano-scale superconductors and propose a generalization that permits to study thermal and quantum fluctuations in STM experiments.
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Taxonomy
TopicsQuantum and electron transport phenomena · Physics of Superconductivity and Magnetism · Surface and Thin Film Phenomena