Professor Gil Refael
California Institute of Technology
From new materials to new devices: TBG phaser and drive-controlled anomalous hall effect
Location: 1080 Physics Research Building
Faculty Host: Brian Skinner
Abstract: During the last decade, several new classes of materials were discovered. Starting with the discovery of topological insulators, through Weyl semimetals, and finally, Moire materials, and particular Moire bilayer graphene.
These materials are fascinating for the new paradigms of electronic behavior they exhibit particularly at low temperatures. In my talk, however, I would like to take an orthogonal viewpoint, and ask: what are these materials good for? What technological opportunities do these materials offer? Concentrating on Moire bilayer graphene, I will show how a Terahertz drive could control the material's Hall response , and second, how the same material can form the gain medium of a Terahertz phonon laser.
