The highly tunable band structure and eightfold degeneracy of the zero-energy Landau level (zLL) of bilayer graphene (BLG) makes it an ideal platform for engineering new quantum Hall states, denoted by the orbital, valley, and spin quantum numbers. However, determining the filling sequence of these quantum states at different electric fields is still an unresolved question. We build an effective single particle model to resolve this based on the new level crossings and strong electron-hole asymmetry, observed experimentally.
About the presenter
Abhay Gupta is a PhD Student at UNSW with CI Alex Hamilton. His project involves studying the electronic properties of 2D, atomically-thin topological materials, as part of FLEET’s Research Theme 1, Topological Materials.