title: Quantum interference in artificial band structures.
abstract: Magnetotransport experiments on two-dimensional electron systems with an atomically precise, one-dimensional potential modulation reveal striking quantum interference oscillations. Within a semiclassical framework, they are recognized either as self-interference along closed orbits, many of them rendered possible by magnetic breakdown between Fermi contour segments of the artificial band structure, or as interference-enhanced backscattering. The known commensurability oscillations appear as a special case of the latter mechanism.
authors: Walter Schottky Institut, Technische Universität München, 85748 Garching, Germany.
authors: R A
authors: RA
authors: Deutschmann
authors: W
authors: W
authors: Wegscheider
authors: M
authors: M
authors: Rother
authors: M
authors: M
authors: Bichler
authors: G
authors: G
authors: Abstreiter
authors: C
authors: C
authors: Albrecht
authors: J H
authors: JH
authors: Smet