Scientists provided nanogold properties to graphene
Scientists from Saint-Petersburg State University, Tomsk Polytechnic University, and their collaborators from Germany and Spain have discovered that upon interaction with cobalt and gold, the graphene does not only persist its unique features but also partially adopts the properties of these metals, namely magnetism and spin-orbit coupling.
The spin of an electron in a «magnet» appearing due to the rotation of an electron about itself. Herewith, an electron rotates around a nucleus which creates a circular electric current and magnetic field. There exists an interaction between the «magnet» of an electron and magnetic fields which is denoted as spin-orbit coupling.
The eigen spin-orbit coupling of graphene is negligibly small while these values of cobalt and gold are extremely high. The researchers have synthesized a system comprised of strictly assembled graphene on the magnetic support of cobalt with an ultrathin layer of gold atoms between cobalt and graphene. The prepared samples of the new system have been thoroughly investigated. It has been turned out that the impact of gold on the graphene leads to the appearance of spin-orbit coupling of graphene. At the same time, the interaction of graphene with cobalt magnetize the graphene.
According to the authors, a possible application area of the newly obtained magnetic-spin-orbit graphene is quantum computers.