Spintronics News, Resources & Information
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
QuantumWise released a new version of their Atomistix ToolKit (ATK) simulation software. The new version speeds up simulation performance by 40%. The new version also includes several new features, including noncollinear spin enables computations of spin transfer torque and other properties of magnetic tunnel junctions.
ATK 2014 introduces several new methodology improvements which make noncollinear simulations fast and robust. ATK thus enables studies of transport problems using Non-Equilibrium Green’s Functions (NEGF) combined with density functional theory (DFT), including spin-orbit interaction and meta-GGA functionals for accurate band gap predictions of the insulating barrier in the MTJ.
Researchers at the Spanish ICN2 Theoretical and Computational Nanoscience Group discovered that graphene has an unprecendented spin relaxation mechanism for non-magnetic samples. This may hold great promise for spintronics applications such as MRAM memory.
This mechanism is unique to graphene and may enable manipulating spin degree of freedom in future information-processing technologies.
Researchers from the Norwegian University of Science and Technology (NTNU) and the University of Cambridge in the UK have shown that you can directly generate an electric current in a magnetic material by rotating the material's magnetization.
This new link between magnetism and electricity, called charge pumping, may find applications in spintronics devices. It will enable new nano-scale magnetic information detection techniques and can also be used to generate very high-frequency alternating currents.
A zigzag-edged graphene nanoribbon is the most magnetic type - and these ribbons are considered the most suitable ones for spintronics applications. Researchers from UCLA and Tohoku University developed a new self-assembly method to fabricate pristine zigzag graphene nanoribbons.
The researchers say they can control the ribbons length, edge configuration and location on the substrate.
Researchers from France's CNRS developed a new method (based on AFM microscopy and lasers) that can measure and image the spin of very thin films at the nanoscale. Here's a nice video detailing the new development, while also giving an introduction to Spintronics:
Researchers from the University of Utah developed a new topological insulator made from bismuth metal deposited on silicon. This material may be very suitable for quantum computers and fast spintronic devices.
This new material has the largest energy gap ever predicted. It can also be used alongside silicon so this material may be relatively easy to be used alongside current semiconductor technology.
Researchers from the University of Utah have managed to control and read spin information at room temperatures. For this experiment, they used an orange OLED device.
The researchers were able to read the nuclear spins of two hydrogen isotops: a single proton and deuterium (a proton, neutron and electron). When the researchers controlled the spin, they controlled the electrical current in the device.