Physicists report emergence of ferromagnetism at onset of Kondo breakdown in moiré bilayer lattices
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Moiré superlattices are materials consisting of two layers stacked on top of each other with either a small rotational misalignment or a lattice mismatch between them. The Kondo lattice model, on the other hand, describes systems in which conduction electrons interact with localized magnetic impurities, which changes the systems' electrical and magnetic properties.
In recent years, physicists have successfully engineered materials that combine the physical properties of these two types of systems. These materials, known as moiré Kondo lattices, are essentially moiré superlattice structures with periodic arrangement of localized magnetic moments, resembling that described by the Kondo lattice model.
Researchers at Kavli Institute at Cornell for Nanoscale Science, Cornell University and the National Institute for Materials Science in Japan have been synthesizing and examining moiré Kondo lattices, in the hope of gaining a better understanding of their underlying physics.
