Journal Article

PreJuSER-54855

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png O-pi Josephson tunnel junctions with ferromagnetic barrier

Weides, M.FZJ* ; Kemmler, M. ; Kohlstedt, H.FZJ* ; Waser, R.FZJ* ; Koelle, D. ; Kleiner, R. ; Goldobin, E.

2006
APS College Park, Md.

This record in other databases:    

Please use a persistent id in citations: http://hdl.handle.net/2128/7664  doi:10.1103/PhysRevLett.97.247001

Abstract: We fabricated high quality Nb/Al2O3/Ni0.6Cu0.4/Nb superconductor-insulator-ferromagnet-superconductor Josephson tunnel junctions. Using a ferromagnetic layer with a steplike thickness, we obtain a 0-pi junction, with equal lengths and critical currents of 0 and pi parts. The ground state of our 330 mu m (1.3 lambda(J)) long junction corresponds to a spontaneous vortex of supercurrent pinned at the 0-pi step and carrying similar to 6.7% of the magnetic flux quantum Phi(0). The dependence of the critical current on the applied magnetic field shows a clear minimum in the vicinity of zero field.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

---

Contributing Institute(s):

1. Elektronische Materialien (IFF-IEM)
2. Center of Nanoelectronic Systems for Information Technology (CNI)
3. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2006

---

Database coverage:
;

---