Soft Nanostructuring of YBCO Josephson Junctions by Phase Separation
Artikel i vetenskaplig tidskrift, 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
Författare
David Gustafsson
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Henrik Pettersson
Chalmers, Teknisk fysik, Mikroskopi och mikroanalys
Beniamino Iandolo
Chalmers, Mikroteknologi och nanovetenskap
Eva Olsson
Chalmers, Teknisk fysik, Mikroskopi och mikroanalys
Thilo Bauch
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Floriana Lombardi
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Nano Letters
1530-6984 (ISSN) 1530-6992 (eISSN)
Vol. 10 12 4824-4829Ämneskategorier
Fysik
DOI
10.1021/nl103311a