IMDEA Nanociencia & various European Centers’ researchers have found out that integration of cobalt with graphene provides relevant characteristics in magnetism’s field. This advancement lead to the creation of novel logic devices, which can retain large amounts of data rapidly along with decreased consumption of energy.
A new technology for digitally encrypting data is spin orbitronics. It not just uses electron’s charge & its spin but even the spin’s interaction with orbital movement. It provides a host of properties that are appropriate in magnetism.
The technology is used in some materials to develop magnetic configurations that are steady. However, it should be managed & shifted rapidly with small currents of electricity. Resulting structures thought to hold a lot of potential for spin-orbitronic devices because they offer high processing speed & huge space for keeping data with minimum consumption of energy.
Recently, European group led by IMDEA Nanociencia Institute have come up with a technique to generate this type of system. It includes a device created of piled films of graphene kept on ferromagnetic cobalt, arranged on a layer of platinum with a particular crystallographic orientation. More information is released in Nano Letters.
Explanation by Leading Author
Paolo Perna who is research’s leading author, explains configuration’s benefits. He says brilliant attributes of graphene makes it easy to get a homogeneous, protected & flat magnetic later that is atomically ideal. But, what is important are 2 magnetic properties that are accomplished. They are: robust interaction known as Dzyaloshinskii-Moriya that permits chiral magnetic structures’ presence & enhancement in cobalt magnetic anisotropy.
The aforementioned structures of chiral magnetic of nanometric size are known as skyrmions. They are steady & are messengers of binary data as they move through graphene. Paolo says that by moving through two electrical contacts, every skyrmion creates an alteration in electrical response which can be deciphered into ones & zeros.
By sticking to this process, in the coming future, it will be easy to develop spin-orbitronic magnetic gadgets like magnetic sensors or memories that are comparatively faster & thicker than present ones. It also consumes less energy.
Paolo concludes by saying that they have proven that it is possible to create good quality magnetic structures based on oxide insulating substrates & graphene. It can be used in the present production processes.