[Tu-P] 2D materials

[Tu-P-53] Ferroelectric Control of Helical Edge States in Graphene on SrTiO₃

〇Ananya Singh¹, Mrityunjay Pandey¹, Philipp Schmidt¹, Maurice Bal³, Kenji Watanabe⁴, Takashi Taniguchi⁵, Szabolcs Csonka⁶, Uli Zeitler³, Hassler Fabian⁷, Markus Morgernstern⁸, Bernd Beschoten¹, Christoph Stampfer^1,2 (1. 2nd Inst. of Physics and JARA-FIT, RWTH Aachen Univ. (Germany), 2. Peter Grünberg Inst. (PGI-9), Forschungszentrum Jülich (Germany), 3. High Field Magnet Lab. (HFML-EMFL) and Inst. for Molecules and Materials (IMM) Radboud Univ. (Netherlands), 4. Res. Center for Functional Materials, National Inst. for Materials Sci. (Japan), 5. Int'l. Center for Materials Nanoarchitectonics, National Inst. for Material Sci. (Japan), 6. Department of Physics, Budapest Univ. of Tech. and Economics (Hungary), 7. Inst. for Quantum Information, RWTH Aachen Univ. (Germany), 8. 2nd Inst. of Physics B and JARA-FIT, RWTH-Aachen Univ. (Germany))

We demonstrate ferroelectric control of helical edge transport in graphene/hBN on SrTiO₃ through substrate induced in-plane polarization. This enables reversible, edge selective switching of interaction driven quantum Hall topological edge states, offering tunable transport in two-dimensional materials.