Magnetotransport study of sub-100 em line-and-space structure: Weiss oscillation in a short period planar structure

摘要

Planar nano-structures (sub-100 em period line-and-space structures) are fabricated with 100 kV EB lithography system and their magnetoresistance perpendicular and parallel to the line-and-space structures is investigated at 4.2 K. In the perpendicular geometry, superposed to the Shubnikov-de Haas oscillations, we observe Weiss oscillations due to the nanometer scale periodical potential in the 2DEG.