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Qu, F. (author), Beukman, A.J.A. (author), Nadj-Perge, S. (author), Wimmer, M.T. (author), Nguyen, B.M. (author), Yi, W. (author), Thorp, J. (author), Sokolich, M. (author), Kiselev, A.A. (author), Manfra, M.J. (author), Marcus, C.M. (author), Kouwenhoven, L.P. (author)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...journal article 2015
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Nguyen, Binh Minh (author), Kiselev, Andrey A. (author), Noah, Ramsey (author), Yi, Wei (author), Qu, F. (author), Beukman, A.J.A. (author), de Vries, F.K. (author), van Veen, J. (author), Nadj-Perge, S. (author), Kouwenhoven, Leo P. (author), Kjaergaard, Morten (author), Suominen, Henri J. (author), Nichele, Fabrizio (author), Marcus, Charles M. (author), Manfra, Michael J. (author), Sokolich, Marko (author)A Corbino ring geometry is utilized to analyze edge and bulk conductance of InAs/GaSb quantum well structures. We show that edge conductance exists in the trivial regime of this theoretically predicted topological system with a temperature-insensitive linear resistivity per unit length in the range of 2 kΩ/μm. A resistor network model of the...journal article 2016
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de Vries, F.K. (author), Timmerman, Tom (author), Ostroukh, Viacheslav P. (author), van Veen, J. (author), Beukman, A.J.A. (author), Qu, F. (author), Wimmer, M.T. (author), Kiselev, Andrey A. (author), Kouwenhoven, Leo P. (author)Josephson junctions defined in strong spin orbit semiconductors are highly interesting for the search for topological systems. However, next to topological edge states that emerge in a sufficient magnetic field, trivial edge states can also occur. We study the trivial edge states with superconducting quantum interference measurements on...journal article 2018