Presentation Information
[Tu-P-102]Enhancement of Hall Field Induced Resistance Oscillations by Artificial Retroreflective Scatterers
〇Frederik Bartels1, Johannes Strobel1, Beate Horn-Cosfeld1, Mihai Cerchez1, Klaus Pierz2, Hans Werner Schumacher2, Dominique Mailly3, Thomas Heinzel1 (1. Institut für Experimentelle Physik der kondensierten Materie, Heinrich-Heine-Universität, Universitätsstraße 1 (Germany), 2. Physikalisch-Technische Bundesanstalt (PTB) (Germany), 3. CNRS, Université Paris-Sud, Université Paris-Saclay (France))
We study Hall field induced resistance oscillations (HIROs) in 2D electron gases with randomly distributed artificial obstacles. These scatterers alter the HIRO period and amplitude. Swiss-cross-shaped obstacles exploit retroreflection, significantly enhancing the backscattering rate and therefore the HIRO amplitude.