Superconductor Science and Technology, volume 33, issue 4, pages 44005
MoRe/YBCO Josephson junctions and π-loops
M.I. Faley
1
,
Pim Reith
2, 3, 4, 5
,
C D Satrya
2, 3, 4, 5
,
V. S. Stolyarov
6
,
B Folkers
2, 3, 4, 5
,
Alexander A. Golubov
6, 7
,
Hans Hilgenkamp
2, 3, 4, 5
,
2
7500 AE Enschede The Netherlands
|
5
Faculty of Science and Technology
Publication type: Journal Article
Publication date: 2020-02-17
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor: 3.6
ISSN: 09532048, 13616668
Materials Chemistry
Metals and Alloys
Ceramics and Composites
Condensed Matter Physics
Electrical and Electronic Engineering
Abstract
We have developed Josephson junctions between the d-wave superconductor YBa2Cu3O7−x (YBCO) and the s-wave Mo0.6Re0.4 (MoRe) alloy superconductor (ds-JJs). Such ds Josephson junctions are of interest for superconducting electronics making use of incorporated π-phase shifts. The I(V)-characteristics of the ds-JJs demonstrate a twice larger critical current along the [100] axis of the YBCO film compared to similarly-oriented ds-JJs made with a Nb top electrode. The characteristic voltage I c R n of the YBCO–Au–MoRe ds-JJs is 750 μV at 4.2 K. The ds-JJs that are oriented along the [100] or [010] axes of the YBCO film exhibit a 200 times higher critical current than similar ds-JJs oriented along the [110] axis of the same YBCO film. A critical current density J c = 20 kA cm−2 at 4.2 K was achieved. Different layouts of π-loops based on the novel ds-JJs were arranged in various mutual coupling configurations. Spontaneous persistent currents in the π-loops were investigated using scanning SQUID microscopy. Magnetic states of the π-loops were manipulated by currents in integrated bias lines. Higher flux states up to ±2.5Φ0 were induced and stabilized in the π-loops. Crossover temperatures between thermally activated and quantum tunneling switching processes in the ds-JJs were estimated. The demonstrated ability to stabilise and manipulate states of π-loops paves the way towards new computing concepts such as quantum annealing computing.
Top-30
Citations by journals
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Superconductor Science and Technology
2 publications, 40%
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Annalen der Physik
1 publication, 20%
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Mesoscience and Nanotechnology
1 publication, 20%
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Citations by publishers
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IOP Publishing
2 publications, 40%
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Wiley
1 publication, 20%
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Treatise
1 publication, 20%
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- We do not take into account publications without a DOI.
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Faley M. et al. MoRe/YBCO Josephson junctions and π-loops // Superconductor Science and Technology. 2020. Vol. 33. No. 4. p. 44005.
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Faley M., Reith P., Satrya C. D., Stolyarov V. S., Folkers B., Golubov A. A., Hilgenkamp H., Dunin-Borkowski R. MoRe/YBCO Josephson junctions and π-loops // Superconductor Science and Technology. 2020. Vol. 33. No. 4. p. 44005.
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TY - JOUR
DO - 10.1088/1361-6668/ab7053
UR - https://doi.org/10.1088/1361-6668/ab7053
TI - MoRe/YBCO Josephson junctions and π-loops
T2 - Superconductor Science and Technology
AU - Faley, M.I.
AU - Reith, Pim
AU - Satrya, C D
AU - Stolyarov, V. S.
AU - Folkers, B
AU - Golubov, Alexander A.
AU - Hilgenkamp, Hans
AU - Dunin-Borkowski, Rafal
PY - 2020
DA - 2020/02/17 00:00:00
PB - IOP Publishing
SP - 44005
IS - 4
VL - 33
SN - 0953-2048
SN - 1361-6668
ER -
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@article{2020_Faley,
author = {M.I. Faley and Pim Reith and C D Satrya and V. S. Stolyarov and B Folkers and Alexander A. Golubov and Hans Hilgenkamp and Rafal Dunin-Borkowski},
title = {MoRe/YBCO Josephson junctions and π-loops},
journal = {Superconductor Science and Technology},
year = {2020},
volume = {33},
publisher = {IOP Publishing},
month = {feb},
url = {https://doi.org/10.1088/1361-6668/ab7053},
number = {4},
pages = {44005},
doi = {10.1088/1361-6668/ab7053}
}
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Faley, M.I., et al. “MoRe/YBCO Josephson junctions and π-loops.” Superconductor Science and Technology, vol. 33, no. 4, Feb. 2020, p. 44005. https://doi.org/10.1088/1361-6668/ab7053.