A team of researchers from the Moscow Institute of Physics and Technology (MIPT) and the Institute for Theoretical and Applied Electrodynamics (ITAE) of the Russian Academy of Sciences (RAS), in collaboration with a colleague from RIKEN (Institute for Physical and Chemical Research in Japan), has provided theoretical proof of the existence of a new class of materials.
The discovery will find use in implantable electronics, alongside devices based on graphene, nanotubes, and a number of other promising materials.
This might give rise to a new direction in search for "nonmetallic" half-metals, i.e., those that do not contain atoms of transition metals, such as nickel, manganese, and lanthanum.
Around the turn of the century, the use of giant magnetoresistance materials in magnetic field sensors (used to read data in hard disk drives) has enabled the storage of much larger amounts of data on HDDs.
They were first predicted based on computer simulations and later proved to exist experimentally.
As for spin-down electrons, their energy is too high, and therefore they cannot carry charge current.