Observation of Magnetic Focusing in Two-Dimensional Hole Systems. (Reannouncementwith New Availability Information)

摘要

We report the first observation of transverse magnetic hole focusing in highquality two-dimensional hole systems confined in square and triangular quantum wells grown on (311)A GaAs substrates. The results demonstrate ballistic hole transport over distances up to ll micrometers and allow us to probe the constant energy contours in k-space for these two types of confinement. Electron transport, Semiconductors, Magnetic focusing.