Density of states of narrow superconducting channels in the regime of quantum fluctuations of the order parameter

K. Yu Arutyunov, J. S. Lehtinen, A. A. Radkevich, A. G. Semenov, A. D. Zaikin

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

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 languageEnglish
Pages (from-to)2110-2113
Number of pages4
JournalPhysics of the Solid State
Volume59
Issue number11
DOIs
Publication statusPublished - 1 Nov 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

Tunnel junctions
blurring
tunnel junctions
Nanowires
emerging
nanowires
Electrodes
electrodes
Electrons
electrons
interactions

Cite this

Arutyunov, K. Yu ; Lehtinen, J. S. ; Radkevich, A. A. ; Semenov, A. G. ; Zaikin, A. D. / Density of states of narrow superconducting channels in the regime of quantum fluctuations of the order parameter. In: Physics of the Solid State. 2017 ; Vol. 59, No. 11. pp. 2110-2113.
@article{83bfbc4442cf433d8afa1ac9cc4858d6,
title = "Density of states of narrow superconducting channels in the regime of quantum fluctuations of the order parameter",
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–Sch{\"o}n 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.",
author = "Arutyunov, {K. Yu} and Lehtinen, {J. S.} and Radkevich, {A. A.} and Semenov, {A. G.} and Zaikin, {A. D.}",
year = "2017",
month = "11",
day = "1",
doi = "10.1134/S1063783417110051",
language = "English",
volume = "59",
pages = "2110--2113",
journal = "Physics of the Solid State",
issn = "1063-7834",
publisher = "American Institute of Physics AIP",
number = "11",

}

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 journalArticleScientificpeer-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

AN - SCOPUS:85035013008

VL - 59

SP - 2110

EP - 2113

JO - Physics of the Solid State

JF - Physics of the Solid State

SN - 1063-7834

IS - 11

ER -