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 -Al Ga 0.3As (0.7) heterostructures, and can be well explained by the Zener mechanism.
Yang
C L
CL
Department of Physics, University of Utah, Salt Lake City 84112, USA.
Zhang
J
J
Du
R R
RR
Simmons
J A
JA
Reno
J L
JL