Semiclassical ballistic microcontact in strong magnetic field
Bykov A. A. , Gusev G. M. , Kvon Z. D., Plyukhin V. G. , Chikichev S. I.
The resistance of a semiclassical ballistic point contact Phased on a two-dimensional electron gas of an AlCaAs-CaAs heterojunction increases by three to four orders of magnitude when the Fermi level reaches the Landau level with / = 2. The R (B) curve exhibits several plateaus near which R = h /ie2 (z>4) if the Fermi level is situated near the diffuse Landau level.