Research team Topological spintronics, within the Concepts group
Sub-10nm thermally stable Perpendicular Shape Anisotropy STT-MRAM realized at SPINTEC (March 08th, 2018)
A team at SPINTEC in Grenoble has demonstrated thermally stable and electrically switchable Spin Transfer Torque MRAM (STT-MRAM) of diameter down to 4nm. Among the various technologies of non-volatile memories, STT-MRAM gathers a unique combination of assets: non-volatility, write speed (3-30ns), density (4Gbit demonstrated by Hynix/Toshiba), low consumption (a few tens of fJ/write), and very […]
Read moreGiant magnetoresistance in lateral metallic nanostructures for spintronic applications (January 22nd, 2018)
This study discuss the shift observed in spintronics from the current-perpendicular-to-plane geometry towards lateral geometries, illustrating the new opportunities offered by this configuration. The possibility to combine ultrathin magnetic and non-magnetic layers allowed creating hetero-structures whose dimensions are smaller than the characteristic lengths of the spin-dependent transport. This has notably led to the discovery of […]
Read morePhD thesis defense : Spin accumulation effects and magnetoresistance effects in lateral nanostructures (November 08th, 2017)
On Wednesday, the 15th Of November 2017 at 10h00, Gilles ZAHND from DRF/INAC/SPINTEC, will defend his PhD thesis entitled “Spin accumulation effects and magnetoresistance effects in lateral nanostructures” Place : Amphitheater from CNRS building A-3rd floor – 25 rue des Martyrs, Grenoble Spintronics is mainly based on the phenomenon of spin accumulation, which is inherent […]
Read moreElectrical detection of magnetic domain walls by inverse and direct spin Hall effect (August 28th, 2017)
Spin orbit torques allow to move efficiently DW in tracks made of ferromagnetic/spin Hall effect bilayer. Domain wall (DW) detection is then of great importance. In this letter, we demonstrate a detection method, based on the ability for a ferromagnetic nanowire, in which a DW is pinned, to inject or detect a pure spin current. […]
Read moreEvidence for spin to charge conversion in GeTe(111), among most read 2016 papers of APL Mater. (August 28th, 2017)
GeTe has been predicted to be the father compound of a new class of multifunctional materials: ferroelectric Rashba semiconductors. In that sense, they are expected to display a coupling between spin-dependent k-splitting and ferroelectricity, thus allowing an electrical control of spin-to-charge conversion phenomena in spintronics. This paper reported the epitaxial growth of Fe/GeTe(111) heterostructures by […]
Read moreOISO – An ANR project (August 23rd, 2017)
The ANR project OISO (OxIde-based SpinOrbitronics) explores the potential of transition metal oxide (TMO) perovskites for SpinOrbitronics. SpinOrbitronics exploits the spin-orbit coupling (SOC) to obtain spin currents without ferromagnets (FM), more efficient torques to switch magnetization and reduced heat dissipation for low power scalable devices. TMO constitute a material platform of structurally well-matched compounds including […]
Read morePhD defense : Ferromagnetic/nonmagnetic nanostructures for the electrical measurement of the spin Hall effect and the detection of domain walls (April 27th, 2017)
On Friday, the 12th Of May 2017 at 10h00, Van Tuong PHAM from UGA (DRF/INAC/SPINTEC), will defend his PhD thesis entitled “Ferromagnetic/nonmagnetic nanostructures for the electrical measurement of the spin Hall effect and the detection of domain walls” Place : Amphithéâtre du CNRS bâtiment A-3ème étage – 25 rue des Martyrs, Grenoble Spin−orbitronics is based […]
Read moreGiant and tunable spin-charge conversion at oxide interfaces (April 14th, 2017)
At the interface between the strontium titanate and the lanthanide aluminate forms a 2 dimensional electron system. By using a dynamical spin injection technique, we were able to demonstrate a record conversion yield between spin and charge current in this system, moreover that is tunable in amplitude and sign by an electrostatic gate, a premiere. […]
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 moreSpin super-conduction in electric insulators. (September 27th, 2016)
Magnonic is an emerging research field, which aims at exploiting the transport of pure spin current in magnetic materials. The elementary excitations are the propagating spin-waves, also called magnons, which are bosonic quasiparticles. The advantages over conventional electronic devices are a significant reduction in energy consumption thanks to the absence of Joule heating, as well as new features taking […]
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