[Th-P2-C] Physics and application of spatial spin textures

4:00 PM - 4:30 PM JST(7:00 AM - 7:30 AM UTC)

[Th-P2-C-01 (Invited)] Tuning the Persistent Spin Helix Orientation via Dual-Gate Control in GaAs Quantum Wells

〇Sergiu Anghel¹, Sonia Chander¹, Ben Werner Grobecker¹, Alexander Poshakinskiy², Takaaki Mano³, John Nicholas Moore⁴, Go Yusa⁴, Markus Betz¹ (1. Technische Universität Dortmund (Germany), 2. Barcelona Institute of Science and Technology (Spain), 3. National Institute for Materials Science (Japan), 4. Tohoku University (Japan))

Here, we demonstrate reversible electrical switching of the PSH orientation by 90° in a dual-gated GaAs double quantum well using time-resolved Kerr rotation microscopy. Independent tuning of the front and back gates enables inversion of the Rashba spin–orbit coupling parameter.