Authors: George Rajna
For the first time, the researchers have now succeeded in producing such a structure in practice, and showed that the theory does correspond to reality.  University of Groningen physicists in collaboration with a theoretical physics group from Universität Regensburg have built an optimized bilayer graphene device that displays both long spin lifetimes and electrically controllable spin-lifetime anisotropy.  Researchers working at coupled graphene, a monolayer form of carbon, with thin layers of magnetic materials like cobalt and nickel to produce exotic behavior in electrons that could be useful for next-generation computing applications.  Particles can exchange their spin, and in this way spin currents can be formed in a material.  Researchers have shown that certain superconductors-materials that carry electrical current with zero resistance at very low temperatures-can also carry currents of 'spin'.  The first known superconductor in which spin-3/2 quasiparticles form Cooper pairs has been created by physicists in the US and New Zealand.  Now a team of researchers from the University of Maryland (UMD) Department of Physics together with collaborators has seen exotic superconductivity that relies on highly unusual electron interactions.  A group of researchers from institutions in Korea and the United States has determined how to employ a type of electron microscopy to cause regions within an iron-based superconductor to flip between superconducting and non-superconducting states.  In new research, scientists at the University of Minnesota used a first-of-its-kind device to demonstrate a way to control the direction of the photocurrent without deploying an electric voltage.  Brown University researchers have demonstrated for the first time a method of substantially changing the spatial coherence of light.  Researchers at the University of Central Florida have generated what is being deemed the fastest light pulse ever developed. 
Comments: 34 Pages.
[v1] 2019-12-11 01:35:55
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