Induced Topology in Semiconducting Nanowires

Topological phases in condensed matter systems are exotic electronic phases of matter which originate from a non-trivial global band structure. Consequently, these phases are topologically immune to local perturbations and bring about great interest. The nanowire configuration intertwines dimensionality and geometry with topology giving rise to novel topological systems with high tunability.

This platform uniquely allows us to observe well anticipated topological phenomena in one dimension such as the Majorana end-modes in proximity-induced superconducting nanowires.

We are currently studying the electronic properties of such nanowires using STM by locally measuring their spectrum evolution with magnetic field and spatially resolving their electronic scattering processes.