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.

critical

nanojunctions

nanopatterning

thin-films

High

temperature

soft

superconductor

grain boundary

junction

t-c

yttrium barium copper oxide

nanoSQUID

devices

Författare

David Gustafsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

H. Pettersson

Chalmers University of Technology

Beniamino Iandolo

Chalmers, Mikroteknologi och nanovetenskap (MC2)

Eva Olsson

Chalmers, Teknisk fysik, Mikroskopi och mikroanalys

Thilo Bauch

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Floriana Lombardi

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Nano Letters

1530-6984 (ISSN) 1530-6992 (eISSN)

Vol. 10 4824-4829

Ämneskategorier

Fysik

DOI

10.1021/nl103311a