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 |
| Number of pages | 4 |
| 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 |
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Density of states of narrow superconducting channels in the regime of quantum fluctuations of the order parameter. / Arutyunov, K. Yu; Lehtinen, J. S.; Radkevich, A. A.; Semenov, A. G.; Zaikin, A. D.
In: Physics of the Solid State, Vol. 59, No. 11, 01.11.2017, p. 2110-2113.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Density of states of narrow superconducting channels in the regime of quantum fluctuations of the order parameter
AU - Arutyunov, K. Yu
AU - Lehtinen, J. S.
AU - Radkevich, A. A.
AU - Semenov, A. G.
AU - Zaikin, A. D.
PY - 2017/11/1
Y1 - 2017/11/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85035013008&partnerID=8YFLogxK
U2 - 10.1134/S1063783417110051
DO - 10.1134/S1063783417110051
M3 - Article
VL - 59
SP - 2110
EP - 2113
JO - Physics of the Solid State
JF - Physics of the Solid State
SN - 1063-7834
IS - 11
ER -