Young and Kim have reported observations of Klein tunneling in heterojunctions of this, made possible by a unique band structure that simulates a relativistic wave equation with a greatly increased fine structure constant.
Young and Kim have reported observations of Klein tunneling in heterojunctions of this, made possible by a unique band structure that simulates a relativistic wave equation with a greatly increased fine structure constant. Based on the presence of Dirac fermions, the anomalous quantum hall effect was predicted to occur in this before being observed by groups at Columbia and Manchester. Landau and Peierls argued that it could not exist, as divergent thermal fluctuations would cause it to melt at any temperature. Many groups struggled to produce it by epitaxial growth or intercalation of its quotidian parent compound, but the breakthrough in fabrication depended on 3M Scotch Tape. For 10 points, identify this material first isolated by Geim and Novoselov in 2004 and often touted as the next silicon, a two-dimensional single layer of hexagonally-arrayed carbon atoms.
Young and Kim have reported observations of Klein tunneling in heterojunctions of this, made possible by a unique band structure that simulates a relativistic wave equation with a greatly increased fine structure constant.
Graphene