Zener Tunneling Between Landau Orbits in a High-Mobility Two-Dimensional   Electron Gas
  Magnetotransport in a laterally confined two-dimensional electron gas (2DEG) can exhibit modified scattering channels owing to a tilted Hall potential. Transitions of electrons between Landau levels with shifted guiding centers can be accomplished through a Zener tunneling mechanism, and make a significant contribution to the magnetoresistance. A remarkable oscillation effect in weak field magnetoresistance has been observed in high-mobility 2DEGs in GaAs-AlGa$_{0.3}$As$_{0.7}$ heterostructures, and can be well explained by the Zener mechanism. 
C. L. Yang (1), J. Zhang (1), R. R. Du (1), J. A. Simmons (2), and J.   L. Reno (2) ((1) Department of Physics, University o...