Physics – Condensed Matter – Superconductivity
Scientific paper
2010-05-05
Physics
Condensed Matter
Superconductivity
Submitted to the Journal of Superconductivity and Novel Magnetism. 11 pages, 6 figures.
Scientific paper
10.1007/s10948-010-1041-0
Polarized neutron reflectometry is used to study the magnetic proximity effect in a superconductor/ferromagnet (SC/FM) system of composition Cu(32nm)/V(40nm)/Fe(1nm)/MgO. In contrast to previous studies, here a single SC/FM bilayer, is studied and multilayer artefacts are excluded. The necessary signal enhancement is achieved by waveguide resonance, i.e. preparing the V(40nm)/Fe(1nm) SC/FM bilayer sandwiched by the highly reflective MgO substrate and Cu top layer, respectively . A new magnetic state of the system was observed at temperatures below 0.7 TC. manifested in a systematic change in the height and width of the waveguide resonance peak. Upon increasing the temperature from 0.7 TC to TC, a gradual decay of this state is observed, accompanied by a 5% growth of the diffuse scattering. According to theoretical studies, such behavior is the result of the magnetic proximity effect. Due to the presence of the thin FM layer the superconducting electrons are polarized and, as a result, near the SC/FM interface an additional magnetic layer appears in the SC with thickness comparable to ksi, the coherence length of the superconductor.
Aksenov V. L.
Bottyan L.
Khaydukov Yu. N.
Nagy Balasz
Nikitenko Yu. V.
No associations
LandOfFree
Magnetic proximity effects in V/Fe superconductor/ferromagnet single bilayer revealed by waveguide-enhanced polarized neutron reflectometry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Magnetic proximity effects in V/Fe superconductor/ferromagnet single bilayer revealed by waveguide-enhanced polarized neutron reflectometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic proximity effects in V/Fe superconductor/ferromagnet single bilayer revealed by waveguide-enhanced polarized neutron reflectometry will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-436592