[Th-A1-B] Quantum transport in 2D materials

9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)

[Th-A1-B-04] Impact of Spin-Orbit Coupling on Spin-Valley Relaxation in BLG/WSe2 Quantum Dots

〇Jonas Daniel Gerber¹, Tijl Degroote¹, Marco Ruhstaller¹, Efe Ersoy¹, Artem Denisov¹, Markus Niese¹, Christoph Adam¹, Lara Ostertag¹, Jessica Richter¹, Clara Galante¹, Takashi Taniguchi², Kenji Watanabe³, Thomas Ihn¹, Klaus Ensslin¹ (1. Solid State Physics Laboratory, ETH Zurich (Switzerland), 2. Research Center for Materials Nanoarchitectonics, National Institute for Materials Science (Japan), 3. Research Center for Electronic and Optical Materials, National Institute for Materials Science (Japan))

Using an in situ switch in bilayer graphene/WSe2 quantum dots, we toggle the spin-orbit gap between 80ueV and 1.5meV. We find that stronger coupling unexpectedly increases spin-valley relaxation times to over 120s.