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.

High

superconductor

devices

nanojunctions

thin-films

temperature

yttrium barium copper oxide

soft

nanopatterning

critical

nanoSQUID

grain boundary

junction

t-c

Author

David Gustafsson

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

H. Pettersson

Chalmers

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 4824-4829

Subject Categories

Physical Sciences

DOI

10.1021/nl103311a

More information

Latest update

9/10/2018