Nanoscale control of 2D superconductivity and Majorana states

Principal investigator

Felix Lüpke, Peter Grünberg Institute for Quantum Nanoscience (PGI-3), Forschungszentrum Jülich [webpage]

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Abstract

Majorana states occur at the boundaries of topological superconductors and have sparked interest due to their exotic quantum properties. While scanning probe microscopy has proven to be a powerful tool for the passive detection of Majorana state signatures at sample surfaces, a crucial next step for potential applications is the active control of Majorana states. We study the manipulation of 2D topological superconductivity and Majorana states by scanning probe microscopy.

2D topological superconducting van der Waals heterostructure are fabricated from exfoliated bulk materials and stacked using our developed assembly techniques [Nat. Phys. 16, 526 (2020); Adv. Mater. Interfaces 2300658 (2023)]. We characterize the heterostructures using our scanning probe microscopes, at low temperatures and in magnetic fields.