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.
yttrium barium copper oxide
temperature
nanoSQUID
High
nanopatterning
devices
soft
superconductor
thin-films
junction
critical
nanojunctions
t-c
grain boundary
Author
David Gustafsson
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Henrik Pettersson
Chalmers, Applied Physics, Microscopy and Microanalysis
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
Physical Sciences
DOI
10.1021/nl103311a