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@ARTICLE{Weides:52700,
author = {Weides, M. and Kemmler, M. and Goldobin, E. and Koelle, D.
and Kleiner, R. and Kohlstedt, H. and Buzdin, A.},
title = {{H}igh quality ferromagnetic 0 and pi {J}osephson tunnel
junctions},
journal = {Applied physics letters},
volume = {89},
issn = {0003-6951},
address = {Melville, NY},
publisher = {American Institute of Physics},
reportid = {PreJuSER-52700},
pages = {122511},
year = {2006},
note = {Record converted from VDB: 12.11.2012},
abstract = {The authors fabricated high quality Nb/Al2O3/Ni0.6Cu0.4/Nb
superconductor-insulatorferromagnet-superconductor Josephson
tunnel junctions. Depending on the thickness of the
ferromagnetic Ni0.6Cu0.4 layer and on the ambient
temperature, the junctions were in the 0 or pi ground state.
All junctions have homogeneous interfaces showing almost
perfect Fraunhofer patterns. The Al2O3 tunnel barrier allows
one to achieve rather low damping, which is desired for many
experiments especially in the quantum domain. The McCumber
parameter beta(c) increases exponentially with decreasing
temperature and reaches beta(c)approximate to 700 at T=2.11
K. The critical current density in the pi state was up to 5
A/cm(2) at T=2.11 K, resulting in a Josephson penetration
depth lambda(J) as low as 160 mu m. Experimentally
determined junction parameters are well described by theory
taking into account spin-flip scattering in the Ni0.6Cu0.4
layer and different transparencies of the interfaces. (c)
2006 American Institute of Physics.},
keywords = {J (WoSType)},
cin = {IFF-IEM / CNI},
ddc = {530},
cid = {I:(DE-Juel1)VDB321 / I:(DE-Juel1)VDB381},
pnm = {Grundlagen für zukünftige Informationstechnologien},
pid = {G:(DE-Juel1)FUEK412},
shelfmark = {Physics, Applied},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000240680300079},
doi = {10.1063/1.2356104},
url = {https://juser.fz-juelich.de/record/52700},
}