1. Parametric exploration of zero-energy modes in three-terminal InSb-Al nanowire devices
- Author
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Wang, Ji-Yin, van Loo, Nick, Mazur, Grzegorz P., Levajac, Vukan, Malinowski, Filip K., Lemang, Mathilde, Borsoi, Francesco, Badawy, Ghada, Gazibegovic, Sasa, Bakkers, Erik P. A. M., Quintero-Perez, Marina, Heedt, Sebastian, and Kouwenhoven, Leo P.
- Subjects
Condensed Matter - Mesoscale and Nanoscale Physics ,Condensed Matter - Superconductivity - Abstract
We systematically study three-terminal InSb-Al nanowire devices by using radio-frequency reflectometry. Tunneling spectroscopy measurements on both ends of the hybrid nanowires are performed while systematically varying the chemical potential, magnetic field and junction transparencies. Identifying the lowest-energy state allows for the construction of lowest- and zero-energy state diagrams, which show how the states evolve as a function of the aforementioned parameters. Importantly, comparing the diagrams taken for each end of the hybrids enables the identification of states which do not coexist simultaneously, ruling out a significant amount of the parameter space as candidates for a topological phase. Furthermore, altering junction transparencies filters out zero-energy states sensitive to a local gate potential. Such a measurement strategy significantly reduces the time necessary to identify a potential topological phase and minimizes the risk of falsely recognizing trivial bound states as Majorana zero modes., Comment: Main text: 12 pages, 9 figures. SupplementaryMaterials: 12 pages, 14 figures
- Published
- 2022
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