Interplay between Static and Dynamic Properties of Semifluxons in YBa2Cu3O7−δ 0−π Josephson Junctions
Artikel i vetenskaplig tidskrift, 2010
We have investigated the static and dynamic properties of long YBa2Cu3O7-delta 0-pi Josephson junctions and compared them with those of conventional 0 junctions. Scanning SQUID microscope imaging has revealed the presence of a semifluxon at the phase discontinuity point in 0-pi Josephson junctions. Zero field steps have been detected in the current-voltage characteristics of all junctions. Comparison with simulation allows us to attribute these steps to fluxons traveling in the junction for conventional 0 junctions and to fluxon-semifluxon interactions in the case of 0-pi Josephson junctions.
vortices
t-c
phase
flux quanta
symmetry
grain-boundaries
superconductors
Författare
Karin Cedergren
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
J. R. Kirtley
Thilo Bauch
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
G. Rotoli
A. Troeman
H. Hilgenkamp
F. Tafuri
Floriana Lombardi
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Physical Review Letters
0031-9007 (ISSN) 1079-7114 (eISSN)
Vol. 104 17 177003 -Ämneskategorier
Fysik
DOI
10.1103/PhysRevLett.104.177003