TY  - JOUR
AU  - Kemmler, M.
AU  - Weides, M.
AU  - Weiler, M.
AU  - Opel, M.
AU  - Goennenwein, S.T.B.
AU  - Vasenko, A.S.
AU  - Golubov, A.A.
AU  - Kohlstedt, H.
AU  - Koelle, D.
AU  - Kleiner, R.
AU  - Goldobin, E.
TI  - Magnetic interference patterns in 0-pi superconductor/insulator/ferromagnet/superconductor Josephson junctions: Effects of asymmetry between 0 and pi regions
JO  - Physical review / B
VL  - 81
IS  - 5
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-9175
SP  - 054522
PY  - 2010
N1  - 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.
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000274998000119
DO  - DOI:10.1103/PhysRevB.81.054522
UR  - https://juser.fz-juelich.de/record/9175
ER  -