- document
-
Ridderbos, Joost (author), Braun, M. (author), de Vries, F.K. (author), Shen, J. (author), Li, Ang (author), Kölling, S. (author), Verheijen, Marcel A. (author), Brinkman, Alexander (author), van der Wiel, Wilfred G. (author), Bakkers, E.P.A.M. (author), Zwanenburg, Floris A. (author)We show a hard superconducting gap in a Ge-Si nanowire Josephson transistor up to in-plane magnetic fields of 250 mT, an important step toward creating and detecting Majorana zero modes in this system. A hard gap requires a highly homogeneous tunneling heterointerface between the superconducting contacts and the semiconducting nanowire. This...journal article 2020
- document
-
de Vries, F.K. (author), Sol, M.L. (author), Gazibegovic, S. (author), op het Veld, R.L.M. (author), Balk, S.C. (author), Car, D. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, Leo P. (author), Shen, J. (author)We study superconducting quantum interference in InSb flake Josephson junctions. An even-odd effect in the amplitude and periodicity of the superconducting quantum interference pattern is found. Interestingly, the occurrence of this pattern coincides with enhanced conduction at both edges of the flake, as is deduced from measuring a...journal article 2019
- document
-
de Vries, F.K. (author), Shen, J. (author), Skolasinski, R.J. (author), Nowak, M.P. (author), Varjas, D. (author), Wang, L. (author), Wimmer, M.T. (author), Zwanenburg, F.A. (author), Li, A. (author), Kölling, S. (author), Verheijen, M.P.A.M. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, Leo P. (author)Low dimensional semiconducting structures with strong spin-orbit interaction (SOI) and induced superconductivity attracted great interest in the search for topological superconductors. Both the strong SOI and hard superconducting gap are directly related to the topological protection of the predicted Majorana bound states. Here we explore the...journal article 2018
- document
-
Gül, Önder (author), Zhang, H. (author), de Vries, F.K. (author), van Veen, J. (author), Zuo, K. (author), Mourik, V. (author), Conesa Boj, S. (author), Nowak, M.P. (author), van Woerkom, D.J. (author), Quintero Perez, M. (author), Cassidy, M.C. (author), Geresdi, A. (author), Koelling, Sebastian (author), Car, D. (author), Plissard, S.R. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, Leo P. (author)Topological superconductivity is a state of matter that can host Majorana modes, the building blocks of a topological quantum computer. Many experimental platforms predicted to show such a topological state rely on proximity-induced superconductivity. However, accessing the topological properties requires an induced hard superconducting gap,...journal article 2017
- document
-
Zhang, H. (author), Gül, Önder (author), Conesa Boj, S. (author), Nowak, M.P. (author), Wimmer, M.T. (author), Zuo, K. (author), Mourik, Vincent (author), de Vries, F.K. (author), van Veen, J. (author), de Moor, M.W.A. (author), Bommer, J.D.S. (author), van Woerkom, D.J. (author), Car, Diana (author), Plissard, S.R. (author), Bakkers, E.P.A.M. (author), Quintero Perez, M. (author), Cassidy, M.C. (author), Koelling, Sebastian (author), Goswami, S. (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Kouwenhoven, Leo P. (author)Semiconductor nanowires have opened new research avenues in quantum transport owing to their confined geometry and electrostatic tunability. They have offered an exceptional testbed for superconductivity, leading to the realization of hybrid systems combining the macroscopic quantum properties of superconductors with the possibility to...journal article 2017