| Autor: |
Victoria Dmitrenko, Elena Zhitlukhina, Mikhail Belogolovskii, Vladimir Tarenkov |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP). |
| DOI: |
10.1109/nap51885.2021.9568572 |
| Popis: |
In this contribution, we summarize current progress in identifying the origin of above-gap ‘anomalous’ features regularly observed in point-contact spectra of superconducting materials. It is shown that their origin can be associated with a nanoscale degraded coating whose contact with the superconducting bulk is imperfect. To verify this hypothesis, we have performed control measurements of differential conductance – versus – voltage bias dependences for point contacts based on Pb, thoroughly studied superconductor with a single energy gap, and a novel two-band superconducting MgB 2 compound. Calculated characteristics well describe experimental findings for these two fundamentally different materials. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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