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Issues »  Volume 43, Issue 5

Analysis of Anomalous Dips in the Differential Conductivity of Heterostructures Based on Superconductors

E. S. Zhitlukhina1,2

1Donetsk Institute for Physics and Engineering Named after O. O. Galkin, NAS of Ukraine, 46 Nauky Ave., UA-03028 Kyiv, Ukraine
2Vasyl’ Stus Donetsk National University, 21 600-richchya Str., UA-21021 Vinnytsia, Ukraine

Received: 15.03.2021. Download: PDF

As found, the physical nature of anomalous dips in the differential conductance spectra of heterostructures based on superconducting metals is related to the presence of a nanoscale layer on their surface with partially or completely suppressed order parameter. The difference between tunnel junctions and point contacts is analyzed. As theoretically shown, the shot-noise measurements of the same samples provide additional information that substantially complements the data obtained from differential conductance spectra.

Key words: superconducting heterostructures, differential conductance, current fluctuations, point contacts.

URL: https://mfint.imp.kiev.ua/en/abstract/v43/i05/0579.html

DOI: https://doi.org/10.15407/mfint.43.05.0579

PACS: 05.60.Gg, 73.20.-r, 73.40.Gk, 73.21.Ac, 73.63.Rt, 74.40.-n, 74.45.+c, 74.81.-g

Citation: E. S. Zhitlukhina, Analysis of Anomalous Dips in the Differential Conductivity of Heterostructures Based on Superconductors, Metallofiz. Noveishie Tekhnol., 43, No. 5: 579—591 (2021) (in Ukrainian)

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