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Volume 6 Research & Reviews: Journal of Material Sciences
ISSN: 2321-6212 Materials Physics 2018
August 16-17, 2018
August 16-17, 2018 | London, UK
4th International Conference on
Condensed Matter and Materials Physics
Supercurrent and transport properties of mesoscopic SNFS Josephson junction under the injection
of spin polarized current
Golikova T E, Penzyakov G A, Batov I E and Ryazanov V V
Institute of Solid State Physics - RAS, Russia
Mesoscopic hybrid planar Josephson junctions have attracted a lot of interest in the recent decade in terms of their possible
applications in the electronics, spintronics, quantum computing and fundamental research. We have investigated the
transport properties of Josephson junctions based on superconductor – normal metal/ ferromagnet – superconductor (Al-Cu/
Fe-Al) with double layered N/F weak link (Cu/Fe) under the controllable spin polarized current injection at low temperatures
and in weakmagnetic fields. Spin polarized current was injected in the middle of the Josephson junction from the perpendicular
ferromagnet electrode. We have observed the supercurrent in this type of junctions show nonlinear dependence of low values
injection current from F-electrode. We claimed that this effect is due to 0-π transition, i.e. the fundamental Josephson relation
can be changed from I=Ic sinΦ to I=Icsin (Φ+ π) by controlling not only energy distribution as it was done in but also with the
presence of spin polarization of the injection current. Our experiments also demonstrated the appearance of double-peak
peculiarity in differential resistance at high values of the injection current which is assumed to be due to the double proximity
effect.
Figure 1: SEM image of the multiterminal Al-(Cu/Fe)-Al Josephson junction together with the measurement scheme.
Recent Publications
1. F J Jedema et al. (2002) Electrical detection of spin procession in a metallic mesoscopic spin valve. Nature. 416:713-716.
2. T Yu Karminskaya et al. (2010) Josephson effect in superconductor/ferromagnet structures with a complex weal link
region. Phys. Rev. B. 81:214518.
3. T E Golikova et al. (2012) Double proximity effect in hybrid planar superconductor (normal/metal/ferromagnet)-
superconductor structures. Phys. Rev. B 86:064416.
Biography
Golikova T E obtained her PhD Degree in Physics in 2014 and she is working on experimental investigation of the interplay of superconductivity and magnetism at low
temperatures involving structure fabrication with the nanotechnology tools. Her research interest include: superconductivity and magnetism, spintronics, Josephson
junctions.
Golikova T E et al., Res. Rev. J Mat. Sci. 2018, Volume 6
DOI: 10.4172/2321-6212-C2-017