1. Parametric exploration of zero-energy modes in three-terminal InSb-Al nanowire devices
- Author
-
Ji-Yin Wang, Nick van Loo, Grzegorz P. Mazur, Vukan Levajac, Filip K. Malinowski, Mathilde Lemang, Francesco Borsoi, Ghada Badawy, Sasa Gazibegovic, Erik P. A. M. Bakkers, Marina Quintero-Pérez, Sebastian Heedt, and Leo P. Kouwenhoven
- Subjects
Superconductivity (cond-mat.supr-con) ,Condensed Matter - Mesoscale and Nanoscale Physics ,Condensed Matter - Superconductivity ,Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ,FOS: Physical sciences - 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., Main text: 12 pages, 9 figures. SupplementaryMaterials: 12 pages, 14 figures
- Published
- 2022