Comment on “Josephson Current as a Boundary Condition for Gor'kov Equations”
Publication type: Journal Article
Publication date: 2022-11-28
scimago Q3
wos Q3
SJR: 0.370
CiteScore: 3.9
Impact factor: 1.7
ISSN: 15571939, 15571947
Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Abstract
In a recent paper, Ovchinnikov in J Supercond Nov Magn 35, 663 (2022) claimed that the Josephson current remains purely sinusoidal in the second order of the perturbation theory with respect to the barrier (interface) transparency. In this comment, we explain that this wrong claim arises due to neglecting inhomogeneous suppression of the order parameter in the vicinity of the barrier, which is inevitably accompanied by nonlinear spatial dependence of the superconducting phase. With both effects taken into account, the second order of the perturbation theory produces nonzero second Josephson harmonic.
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Osin A. S., Fominov Y. V. Comment on “Josephson Current as a Boundary Condition for Gor'kov Equations” // Journal of Superconductivity and Novel Magnetism. 2022.
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Osin A. S., Fominov Y. V. Comment on “Josephson Current as a Boundary Condition for Gor'kov Equations” // Journal of Superconductivity and Novel Magnetism. 2022.
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TY - JOUR
DO - 10.1007/s10948-022-06457-5
UR - https://doi.org/10.1007/s10948-022-06457-5
TI - Comment on “Josephson Current as a Boundary Condition for Gor'kov Equations”
T2 - Journal of Superconductivity and Novel Magnetism
AU - Osin, A. S.
AU - Fominov, Ya. V.
PY - 2022
DA - 2022/11/28
PB - Springer Nature
SN - 1557-1939
SN - 1557-1947
ER -
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@article{2022_Osin,
author = {A. S. Osin and Ya. V. Fominov},
title = {Comment on “Josephson Current as a Boundary Condition for Gor'kov Equations”},
journal = {Journal of Superconductivity and Novel Magnetism},
year = {2022},
publisher = {Springer Nature},
month = {nov},
url = {https://doi.org/10.1007/s10948-022-06457-5},
doi = {10.1007/s10948-022-06457-5}
}
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