Phys.org December 1, 2021
An international team of researchers (USA – UC Berkeley, Japan) believe that to surpasses the limits of Moore’s Law magnons can be harnessed to carry information. Since the electrons themselves remain stationary as magnons pass through them, there is no heat to be dissipated, the major limiting factor in Moore’s Law. Magnons carry spins faster and with lower heat dissipation than electrons. They are starting with heterostructures of Mott insulators and heavy metals that will enable them to add and remove spin in the Mott insulator. They are fabricating a prototype Topological Magnon Transistor (TMT) in which spin would be the information transported. The TMT will be switched on and off by simply changing the spin configuration of the Mott insulator, which can be done by the injection of spin in one direction or another. They expect the prototype to operate at three orders of magnitude lower power than related systems, and to be able to transport information at terahertz speeds across tens of microns…read more.
The Topological Magnon Transistor proposed by James Analytis will be built on a thin film Mott insulator… Credit: University of California – Berkeley