Advances in YBa2Cu3O7-delta grain boundary biepitaxial Josephson junctions: Transport properties and mesoscopic effects
Journal article, 2007

We report on the latest developments in the study of transport properties of YBa2CU3O7-delta (YBCO)-based grain boundary (GB) biepitaxial Josephson junctions. We have successfully extended the fabrication process s,. originally developed for (110) oriented SrTiO3 substrates, to (110) oriented LaAlO3 substrates in view of microwave applications. We will report, also, on the observation of conductance fluctuations, we believe related to the coherent diffusion of quasi-particles across the GB. These results, together with the recent observation of macroscopic quantum tunneling and energy level quantization in these Junctions, could help cast some light on the mechanism involved in transport across grain boundaries and in revising the role and the effect of quasi particles in d-wave transport.

Author

D. Stornaiuolo

University of Naples Federico II

D. Born

University of Naples Federico II

D. Dalena

University of Campania Luigi Vanvitelli

E. Gambale

University of Campania Luigi Vanvitelli

G. Rotoli

University of L'Aquila

Thilo Bauch

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

A. Tagliacozzo

University of Naples Federico II

A. Barone

University of Naples Federico II

Floriana Lombardi

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

F. Tafuri

University of Naples Federico II

IEEE Transactions on Applied Superconductivity

1051-8223 (ISSN) 15582515 (eISSN)

Vol. 17 2 225-228

Subject Categories

Physical Sciences

DOI

10.1109/tasc.2007.898708

More information

Latest update

9/6/2018 1