Print Email Facebook Twitter Electric and Magnetic Tuning Between the Trivial and Topological Phases in InAs/GaSb Double Quantum Wells Title Electric and Magnetic Tuning Between the Trivial and Topological Phases in InAs/GaSb Double Quantum Wells Author Qu, F. Beukman, A.J.A. Nadj-Perge, S. Wimmer, M.T. Nguyen, B.M. Yi, W. Thorp, J. Sokolich, M. Kiselev, A.A. Manfra, M.J. Marcus, C.M. Kouwenhoven, L.P. Faculty Applied Sciences Department QN/Quantum Nanoscience Date 2015-07-15 Abstract Among the theoretically predicted two-dimensional topological insulators, InAs/GaSb double quantum wells (DQWs) have a unique double-layered structure with electron and hole gases separated in two layers, which enables tuning of the band alignment via electric and magnetic fields. However, the rich trivial-topological phase diagram has yet to be experimentally explored. We present an in situ and continuous tuning between the trivial and topological insulating phases in InAs/GaSb DQWs through electrical dual gating. Furthermore, we show that an in-plane magnetic field shifts the electron and hole bands relatively to each other in momentum space, functioning as a powerful tool to discriminate between the topologically distinct states. To reference this document use: http://resolver.tudelft.nl/uuid:06998cc6-8c40-4896-806e-31c50dc00f3e Publisher American Physical Society ISSN 0031-9007 Source https://doi.org/10.1103/PhysRevLett.115.036803 Source Physical Review Letters, 115 (3), 2015 Part of collection Institutional Repository Document type journal article Rights © 2015 American Physical Society Files PDF 322786.pdf 1.35 MB Close viewer /islandora/object/uuid:06998cc6-8c40-4896-806e-31c50dc00f3e/datastream/OBJ/view