High field resonant magnetotransport measurements in small n(1+)nn(1+) structures: Evidence for elastic inter-landau level scattering.

Magnetophonon resonance at high electric fields in thin (1 to 9micrometer) n(1+)nn(1+) GaAs sandwich structures reveals a new mode of magnetoconduction, elastic inter-Landau level scattering, in which a semi-localized electron in the n(th) Landau level can scatter "elastically" or "quasi-elastically" into the (n + 1)(th) level. The onset condition for the process can be calculated from an analysis of Schroedinger's equation for an electron in crossed electric and magnetic fields.