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@ARTICLE{Gundareva:1046008,
author = {Gundareva, Irina and Martinez-Castro, Jose and Tautz, Frank
Stefan and Mussler, Gregor and Jalil, Abdur Rehman and Hou,
Xiao and Grützmacher, Detlev and Schäpers, Thomas and
Lyatti, Matvey},
title = {{I}nduced superconductivity in hybrid
{A}u/{YB}a2{C}u3{O}7−x electrodes on vicinal substrates},
journal = {Scientific reports},
volume = {15},
number = {1},
issn = {2045-2322},
address = {[London]},
publisher = {Springer Nature},
reportid = {FZJ-2025-03653},
pages = {32282},
year = {2025},
abstract = {Superconducting electrodes are an integral part of hybrid
Josephson junctions used in many applications including
quantum technologies. We report on the fabrication and
characterization of superconducting hybrid Au/YBa2Cu3O7−x
(YBCO) electrodes on vicinal substrates. In these
structures, superconducting CuO2-planes face the gold film,
resulting in a higher value and smaller variation of the
induced energy gap compared to conventional Au/YBCO
electrodes based on films with the c-axis normal to the
substrate surface. Using scanning tunneling microscopy, we
observe an energy gap of about 10–17 meV at the surface of
the 15- nm-thick gold layer deposited in situ atop the YBCO
film. To study the origin of this gap, we fabricate
nanoconstrictions from the Au/YBCO heterostructures and
measure their electrical transport characteristics. The
conductance of the nanoconstrictions shows a series of dips
due to multiple Andreev reflections in YBCO and gold,
providing clear evidence of the superconducting nature of
the gap in gold. We consider the Au/YBCO electrodes to be a
versatile platform for hybrid Josephson devices with a high
operating temperature.},
cin = {PGI-3 / PGI-6 / PGI-9 / PGI-10},
ddc = {600},
cid = {I:(DE-Juel1)PGI-3-20110106 / I:(DE-Juel1)PGI-6-20110106 /
I:(DE-Juel1)PGI-9-20110106 / I:(DE-Juel1)PGI-10-20170113},
pnm = {5213 - Quantum Nanoscience (POF4-521)},
pid = {G:(DE-HGF)POF4-5213},
typ = {PUB:(DE-HGF)16},
pubmed = {40890252},
UT = {WOS:001565533400005},
doi = {10.1038/s41598-025-17434-y},
url = {https://juser.fz-juelich.de/record/1046008},
}