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Physical Review Letters, volume 121, issue 17, publication number 177702

Second-Harmonic Current-Phase Relation in Josephson Junctions with Ferromagnetic Barriers

Stoutimore M. J. A. 1
Rossolenko A. N. 2
Bolginov V V 2, 3, 4
Bol'ginov V.V. 2, 3, 4
Oboznov V.A. 2
Rusanov A. Y. 2
Baranov D.S. 2, 5
Baranov D. S. 2, 5
Pugach N. 4, 6
Frolov S. M. 7
Frolov Sergey A. 7
Ryazanov V V 2, 3, 8
Ryazanov V. V. 2, 3, 8
Van Harlingen D.J. 1
Publication typeJournal Article
Publication date2018-10-26
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor8.6
ISSN00319007, 10797114
General Physics and Astronomy
Abstract
We report the observation of a current-phase relation dominated by the second Josephson harmonic in superconductor-ferromagnet-superconductor junctions. The exotic current-phase relation is realized in the vicinity of a temperature-controlled 0-to-π junction transition, at which the first Josephson harmonic vanishes. Direct current-phase relation measurements, as well as Josephson interferometry, nonvanishing supercurrent and half-integer Shapiro steps at the 0-π transition self-consistently point to an intrinsic second harmonic term, making it possible to rule out common alternative origins of half-periodic behavior. While surprising for diffusive multimode junctions, the large second harmonic is in agreement with theory predictions for thin ferromagnetic interlayers.

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Stoutimore M. J. A. et al. Second-Harmonic Current-Phase Relation in Josephson Junctions with Ferromagnetic Barriers // Physical Review Letters. 2018. Vol. 121. No. 17. 177702
GOST all authors (up to 50) Copy
Stoutimore M. J. A., Rossolenko A., Bolginov V. V., Bol'ginov V., Oboznov V., Rusanov A., Baranov D., Baranov D., Pugach N., Frolov S. M., Frolov S. A., Ryazanov V. V., Ryazanov V. V., Van Harlingen D. Second-Harmonic Current-Phase Relation in Josephson Junctions with Ferromagnetic Barriers // Physical Review Letters. 2018. Vol. 121. No. 17. 177702
RIS |
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RIS Copy
TY - JOUR
DO - 10.1103/PhysRevLett.121.177702
UR - https://doi.org/10.1103%2FPhysRevLett.121.177702
TI - Second-Harmonic Current-Phase Relation in Josephson Junctions with Ferromagnetic Barriers
T2 - Physical Review Letters
AU - Stoutimore, M. J. A.
AU - Rossolenko, A. N.
AU - Oboznov, V.A.
AU - Rusanov, A. Y.
AU - Baranov, D.S.
AU - Pugach, N.
AU - Frolov, S. M.
AU - Van Harlingen, D.J.
AU - Bolginov, V V
AU - Ryazanov, V. V.
AU - Bol'ginov, V.V.
AU - Baranov, D. S.
AU - Frolov, Sergey A.
AU - Ryazanov, V V
PY - 2018
DA - 2018/10/26 00:00:00
PB - American Physical Society (APS)
IS - 17
VL - 121
SN - 0031-9007
SN - 1079-7114
ER -
BibTex
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BibTex Copy
@article{2018_Stoutimore,
author = {M. J. A. Stoutimore and A. N. Rossolenko and V.A. Oboznov and A. Y. Rusanov and D.S. Baranov and N. Pugach and S. M. Frolov and D.J. Van Harlingen and V V Bolginov and V. V. Ryazanov and V.V. Bol'ginov and D. S. Baranov and Sergey A. Frolov and V V Ryazanov},
title = {Second-Harmonic Current-Phase Relation in Josephson Junctions with Ferromagnetic Barriers},
journal = {Physical Review Letters},
year = {2018},
volume = {121},
publisher = {American Physical Society (APS)},
month = {oct},
url = {https://doi.org/10.1103%2FPhysRevLett.121.177702},
number = {17},
doi = {10.1103/PhysRevLett.121.177702}
}
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