Millimeter-scale layered MoSe2 grown on sapphire and evidence for negative magnetoresistance (April 14th, 2017)
We have fabricated large-scale two-dimensional transition metal dichalcogenide (2D TMD) MoSe2, a promising candidate for electronics, valley-spintronics and optoelectronics, on insulating sapphire and have investigated its structural and transport properties. We have shown that the layered MoSe2 exhibits characteristics of a stoichiometric 2H-phase, a van der Waals epitaxy regarding the substrate and we have evidenced […]
Read moreMagneto-optical micromechanical systems for magnetic field mapping (February 17th, 2017)
Magnetic field mapping techniques have continuously been developed due to the necessity for determining the spatial components of local magnetic fields in many industrial applications and fundamental research. Several factors are considered for sensors such as spatial resolution, sensitivity, linear response, required proximity to the sample, as well as the ability to filter noise and […]
Read moreEvidence for spin-to-charge conversion by Rashba coupling in metallic states at the Fe/Ge(111) interface (January 09th, 2017)
We have demonstrated the spin-to-charge interconversion by Rashba coupling at the interface between two light materials: iron and germanium which is compatible with today’s CMOS technology. This result constitutes the first step towards the fabrication of a spin transistor based on the spin-orbit coupling. The spin-orbit coupling, relating the electron spin and momentum, has long […]
Read moreMisalign to write faster (October 17th, 2016)
The writing in conventional magnetic memories based on magnetic tunnel junctions (STT-MRAM) is intrinsically stochastic : a large amplitude thermal fluctuation is required to trigger the siwthing of the storage layer magnetization. SPINTEC has shown that this stochasticity can be almost completely suppressed by inducing an oblique anisotropy (easy-cone anisotropy) in the storage layer. This […]
Read moreComparison of the use of NiFe and CoFe as electrodes for metallic lateral spin valves (May 17th, 2016)
A CoFe based ferromagnetic alloy has been used in lateral spin valves to replace NiFe alloys, which are overwhelmingly exploited as ferromagnets electrodes in lateral spintronic devices. By using this second material, emitted signals are found to be one order of magnitude larger. In addition to using the electric charge of the electron, spintronic technologies […]
Read moreA fluctuating magnetic order allows more spins to pass through an interface (February 26th, 2016)
Bringing a ferromagnetic layer to resonance creates non-equilibrium magnetization dynamics which generates a spin current. The spin current propagates from the ferromagnet into a neighboring layer if permitted by the interface. This is equivalent to saying that the air-flow generated by rotating the blades of a fan can propagate in a neighboring room if the […]
Read moreDes skyrmions magnétiques observés à température ambiante (February 09th, 2016)
Ces structures magnétiques nanométriques ont été observées à températures ambiante dans des matériaux compatibles avec l’industrie électronique. Ces résultats font sauter un verrou important quant à l’utilisation des skyrmions comme vecteur d’information à l’échelle nanométrique dans nos ordinateurs.
Read moreMATERIALS GROWTH (June 29th, 2015)
Overview Materials development is a fundamental activity at SPINTEC, a determining factor for the success of our research projects. The Materials Growth team assists and participates on the development and characterization of new materials and stacks for the different research projects. Sputtering and molecular beam epitaxy (MBE) are our two main deposition techniques. The team […]
Read moreNANOFABRICATION (June 29th, 2015)
The PTA, Up-line Technological Platform, is a 1000 class clean room resulting from pooling of the technical and human resources of the INAC (ex-DRFMC) and the FMNT (Federation of Micro and Nano Technologies) grouping laboratories from the CNRS, CEA, INP and UJF (LTM, IMEP, SPINTEC, LMGP, systems activities of the G2E-lab). The clean room extends […]
Read moreINSTRUMENTATION (June 29th, 2015)
Spintec has developed a strong expertise in the fields of temperature-dependent magnetic and transport properties, sub-nanosecond magnetization dynamics, high frequency noise and near field magnetic probing. The laboratory is equipped with numerous experimental set-ups, whether home made or commercial, which allow characterizing any system from the laboratory sample to the wafer-level test device. Pictures show […]
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