Schmidt, T.; Haug, Rolf J.; Fal'ko, V.I.; v. Klitzing, K.; Förster, A.; Lüth, H.
(College Park, MD : American Physical Society, 1997)
The local density of states of heavily doped GaAs is explored at high magnetic fields, where only a single or few Landau bands are occupied. Our experiment is based on resonant tunneling through impurity states and images ...