Abstract
The current–voltage characteristics of superconductor–insulator–semiconductor (S1–I–S2) tunnel junctions, where superconducting electrode S2 is a thin nanowire, are studied experimentally. The observed blurring of the gap singularities is interpreted as a manifestation of the order parameter quantum fluctuations. We propose a model taking into account the broadening of the density of states due to the interaction of electrons with the Mooij–Schön plasmon mode emerging in a quasi-one-dimensional superconducting channel in the regime of quantum fluctuations of the order parameter. The model gives results that are in a reasonable qualitative agreement with the experimental data.
| Original language | English |
|---|---|
| Pages (from-to) | 2110-2113 |
| Journal | Physics of the Solid State |
| Volume | 59 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1 Nov 2017 |
| MoE publication type | A1 Journal article-refereed |
Funding
This communication contains the results of studies carried out under the project TZ-89 “Quantum cooperative phenomena at low and ultralow temperatures” within the framework of the Basic Research Program at the National Research University Higher School of Economics (HSE) and supported by the Russian Academic Excellence Project 5-100.
Keywords
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