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, 40225 Düsseldorf, Germany (Germany), 2. Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany (Germany), 3. CNRS, Université Paris-Sud, Université Paris-Saclay, C2N Palaiseau, 91120 Palaiseau, France (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.