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
Stuart Parkin, an IBM fellow and director of the Max Planck Institute of Microstructure Physics has won the €1 million 2014 Millennium Technology Prize. Parkin's major achievement was the application of giant magnetoresistance (GMR) to create extremely sensitive devices that can detect tiny magnetic fields. This enabled a huge expansion in hard disk data capacity.
The award committee said that the award was given for his "pioneering contribution to the science and application of spintronic materials and his work leading to a prodigious growth in the capacity to store digital information".
Researchers from Ohio University managed to measure the transmission of spin information in only a few electrons, using a diamond wire only 4 micrometers long and 200 nanometers wide, chilled to 4 degrees above absolute zero. They discovered that spin transport is efficient in diamond wire.
To measure the spin information, the researchers cooled the wire made of a tiny artificial diamond (doped with nitrogen) stretched out into a thin wire shape, and then turned on a magnetic field and measured the spins of electrons in the wire with a tiny cantilever.
Researchers from the University of Utah developed Spintronics devices that can convert heat into electricity. Those thermoelectric devices work at room temperature and don't require a continuous external magnetic field.
Those devices (that can convert even minute heat to electricity) function on a concept known as spin-caloritronics, in which thermal and electrical transport occurs in different parts of the device.
Researchers from Japan's RIKEN center discovered that skyrmions can be manipulated thermally using an electron beam. The researcher say that such a method could be used to develop low-energy memory and logic devices - in which the info is coded by the skyrmions.
In ferromagnetic materials, each atom acts like a tiny bar magnet. Usually these all those "magnets" point in the same direction, but sometimes they can create skyrmions - "whirls" in the magnetic orientation of those atoms (see image above).
I'm happy to announce that Spintronics-Info's infrastructure was updated today. Spintronics-Info is based on the open-source Drupal CMS, and we updated from version 6 to version 7. As a reader you will not find many differences, but hopefully it will enable a more stable, safe and quick web site.
If you do find any bugs or glitches, please let us know.
Researchers from Germany's Helmholtz-Zentrum Dresden-Rossendorf (HZDR) developed and tested a new technique to fabricate spin valves using ion beams. The researchers managed to structure an iron aluminium alloy in such a way as to subdivide the material into individually magnetizable regions at the nanometer scale - and function as a spin valve.
This is a different approach to standard spin valves, made from successive non-magnetic and ferromagnetic layers. The new spin valves has a lateral spin valve geometry, where the different magnetic regions are organized one next to the other as opposed to in layers one on top of the other. This enables the spin valves to work in parallel on large surfaces, and also means that that the production costs are low.