Soft Nanostructuring of YBCO Josephson Junctions by Phase Separation
Journal article, 2010
We have developed a new method to fabricate biepitaxial YBa2Cu3O7-delta (YBCO) Josephson junctions at the nanoscale allowing junctions widths down to 100 nm and simultaneously avoiding the typical damage in grain boundary interfaces due to conventional patterning procedures By using the competition between the superconducting YBCO and the insulating Y-2 BaCuO5 phases during film growth we formed nanometer sized grain boundary junctions in the insulating Y2BaCuO5 matrix as confirmed by high resolution transmission electron microscopy Electrical transport measurements give clear indications that we are close to probing the intrinsic properties of the grain boundaries.
critical
nanojunctions
nanopatterning
thin-films
High
temperature
soft
superconductor
grain boundary
junction
t-c
yttrium barium copper oxide
nanoSQUID
devices
Author
David Gustafsson
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
H. Pettersson
Chalmers University of Technology
Beniamino Iandolo
Chalmers, Microtechnology and Nanoscience (MC2)
Eva Olsson
Chalmers, Applied Physics, Microscopy and Microanalysis
Thilo Bauch
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Floriana Lombardi
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Nano Letters
1530-6984 (ISSN) 1530-6992 (eISSN)
Vol. 10 12 4824-4829Subject Categories (SSIF 2011)
Physical Sciences
DOI
10.1021/nl103311a