Quantifying fluctuations from the tunnelling differential conductance

2011/09/23 by Antonio M. Garcı́a-Garcı́a, Antonio M. Garcia-Garcia, Pedro Ribeiro +2
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Surface and Thin Film Phenomena #cond-mat.mes-hall #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.1109.5090

4 pages, 1 figure, submitted to proceedings Super-Stripes 2011, Rome

arxiv created 2011/09/23 · arxiv updated 2011/09/26

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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