%0 Journal Article
%A Kemmler, M.
%A Weides, M.
%A Weiler, M.
%A Opel, M.
%A Goennenwein, S.T.B.
%A Vasenko, A.S.
%A Golubov, A.A.
%A Kohlstedt, H.
%A Koelle, D.
%A Kleiner, R.
%A Goldobin, E.
%T Magnetic interference patterns in 0-pi superconductor/insulator/ferromagnet/superconductor Josephson junctions: Effects of asymmetry between 0 and pi regions
%J Physical review / B
%V 81
%N 5
%@ 1098-0121
%C College Park, Md.
%I APS
%M PreJuSER-9175
%P 054522
%D 2010
%Z This work is supported by the Deutsche Forschungsgemeinschaft (DFG) via the SFB/TRR 21 and Projects No. GO 944/3 and KO 1303/3. M. Kemmler acknowledges support by the Carl-Zeiss Stiftung. M. Weides is supported by DFG under Project No. WE 4359/1-1.
%X We present a detailed analysis of the dependence of the critical current I-c on an in-plane magnetic field B of 0, pi, and 0-pi superconductor-insulator-ferromagnet-superconductor Josephson junctions. I-c(B) of the 0 and the pi junction closely follows a Fraunhofer pattern, indicating a homogeneous critical current density j(c)(x). The maximum of I-c(B) is slightly shifted along the field axis, pointing to a small remanent in-plane magnetization of the F-layer along the field axis. I-c(B) of the 0-pi junction exhibits the characteristic central minimum. I-c, however, has a finite value here, due to an asymmetry of j(c) in the 0 and the pi part. In addition, this I-c(B) exhibits asymmetric maxima and bumped minima. To explain these features in detail, flux penetration being different in the 0 part and the pi part needs to be taken into account. We discuss this asymmetry in relation to the magnetic properties of the F-layer and the fabrication technique used to produce the 0-pi junctions.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000274998000119
%R 10.1103/PhysRevB.81.054522
%U https://juser.fz-juelich.de/record/9175