Title :
Transport properties of [100] tilt and twist biepitaxial Y-Ba-Cu-O junctions
Author :
Sarnelli, Ettore ; Carillo, Franco ; Testa, Gianluca ; Lombardi, Floriana ; Granozio, F.M. ; Ricci, Fabrizio ; Scotti di Uccio, Umberto ; Tafuri, Francesco
Author_Institution :
Istituto di Cibernetica, CNR, Arco Felice, Italy
fDate :
3/1/2001 12:00:00 AM
Abstract :
The effects of the order parameter symmetry and the interface grain boundary orientation on the transport properties of YBa2Cu3O7-x biepitaxial grain boundary junctions have been investigated. 45° [100] tilt and twist junctions on SrTiO3 [110] and MgO [110] substrates by employing respectively MgO and SrTiO3 as seed layers have been fabricated. More complex junctions by using CeO as seed layers have also been fabricated and analyzed. The analysis of experimental data points towards a predominant d-wave symmetry of the superconductive order parameter
Keywords :
Josephson effect; barium compounds; high-temperature superconductors; superconducting epitaxial layers; tilt boundaries; twin boundaries; yttrium compounds; CeO; CeO seed layer; Josephson junction; MgO; MgO substrate; SrTiO3; SrTiO3 substrate; YBa2Cu3O7-x biepitaxial grain boundary junction; YBa2Cu3O7; interface grain boundary orientation; superconductive order parameter symmetry; tilt junction; transport properties; twist junction; Commercialization; Councils; Critical current; Fabrication; SQUIDs; Substrates; Superconducting device noise; Superconductivity; Testing; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
