Spintronics-Info: the spintronics experts

Spintronics-Info is a news hub and knowledge center born out of keen interest in spintronic technologies.

Spintronics is the new science of computers and memory chips that are based on electron spin rather than (or in addition to) the charge (used in electronics). Spintronics is an exciting field that holds promise to build faster and more efficient computers and other devices.

Recent spintronics News

Researchers find extremely long spin relaxation lifetime in graphene/TMDC structures

Nov 18, 2017

Researchers from Spain's ICN2 institute have performed numerical simulations for spin relaxation in graphene/TMDC heterostructures, and found that these structure feature a spin lifetime anisotropy that is orders of magnitude larger than anything observed in 2D materials - and in fact these results point to a qualitatively new regime of spin relaxation.

Graphene on TMDC image (ICN2)

Spin relaxation lifetime means that time it takes for the spin of electrons in a spin current to lose their spin (return to the natural random disordered state). A long lifetime is very important for spintronics devices. This new study reveals that the rate at which spins relax in graphene/TMDC systems depends strongly on whether they are pointing in or out of the graphene plane, with out-of-plane spins lasting tens or hundreds of times longer than in-plane spins.

New 3D nano-magnets could enable future spintronics device structures

Nov 16, 2017

Researchers from the University of Cambridge and TU Eindhoven have created a nanoscale magnetic circuit capable of moving information through three-dimensional space. This so-called 3D nanoprinting, combined with traditional methods enables functional circuits that can process information, which could lead to future spintronics device development.

Fabrication process of 3D nanomagnets (UOC, TUE)

To create these 3D nanomagnets, the researchers used an electron microscope along with a gas injector to 3-D print a suspended scaffold on a traditional 2-D Silicon substrate. After 3-D nano-printing, magnetic material is deposited over the whole ensemble to allow information transport.

Researchers classify the spin-orbit effects of holes confined to one dimension quantum wires

Nov 14, 2017

Electron 'holes' in semiconductors are very attractive for future spintronics devices due to their unique spin properties, but until now researchers did not have a good understanding of these spin properties. Researchers from Australia's UNSW have classified the spin-orbit effects of holes confined to one dimension for the first time.

Device structure used to research electric field across quantum wire (UNSW)

The researchers started out by trying to explain a 2006 experimental result, that showed that in on-dimensional quantum wires, spin-splitting was extremely sensitive to the direction of the magnetic field, unlike electrons which are insensitive to the field direction. In the recent study, the researchers identified a new spin-orbit interaction factor caused by the holes’ confinement to one dimension, and found that this new factor explained the 2006 experimental result.

Electrical spin control in ultra-low-power transistors enabled though the use of graphene and TMDC

Nov 12, 2017

Researchers from the University of York and Roma Tre University developed a method to build ultra-low-power transistors using composite materials based on single layers of graphene and transition metal dichalcogenides (TMDC). These materials can be used to achieve an electrical control over electron spin.

Graphene and TDMCs to enable efficient transistors image

The teams explained “we found this can be achieved with little effort when 2D graphene is paired with certain semiconducting layered materials. Our calculations show that the application of small voltages across the graphene layer induces a net polarization of conduction spins".

Researchers develop a wavelength-selective plasmonic metamaterial absorber on top of a spintronic device

Oct 11, 2017

Researchers from Japan's National Institute for Materials Science have developed a wavelength-selective plasmonic metamaterial absorber (PMA) on top of a spintronic device. The researchers say that this design enhances the generation of spin currents from the heat produced in the mid-infrared regime.

Plasmonic Absorber on a Spintronics device (NIMS)

The researchers used a mid-infrared plasmonic metamaterials, combined with a spintronics device for the first time. This unique combination enables stronger light absorption and shows the excellent tenability of these metamaterials' resonance wavelengths

Researchers show how to create spin-valley half-metals

Sep 17, 2017

Researchers from Russia and Japan have shown, theoretically, that it is possible to create a new class of materials: spin-valley half-metals. These kind of devices could enable both spintronics valleytronics applications.

Spin-valley half-metal image (MIPT)

In "regular" half-metals, all the electrons that participate in electric currents have the same spin - and so the current is always spin-polarized. These materials have interesting applications for spintronics devices. In the new class of materials now proven theoretically to be possible, there are two valleys present - one providing electrons, one providing holes.

New film material enables to control and detect magnetic skyrmions

Sep 06, 2017

Researchers from Singapore's A*STAR and NTU developed a tunable room-temperature platform that can be used to control and detect magnetic skyrmions. This platform is actually a thin film made from multi-layer stacks of Ir/Fe/Co/Pt.

Magnetic skyrmions array (A*STAR)

In this material, the magnetic interactions governing skyrmion properties can be controlled by varying the ferromagnetic layer composition. The skyrmions exhibit a smooth crossover between isolated (metastable) and disordered lattice configurations across samples, while their size and density can be tuned by factors of two and ten, respectively.