Anomalous temperature dependence of commensurability oscillations in one- and two-dimensional lateral superlattices

Zusammenfassung

Two-dimensional electron systems were laterally modulated using the method of in situ interferometric illumination. Magnetotransport measurements on 1D and 2D modulated systems revealed a phase change of the commensurability oscillations depending on temperature. This behaviour is surprising and cannot be explained by existing theories.