QuMat.1-UU-M3
in Pillar M

PhD 4y: Lumen Eek

Project Leader: Cristiane de Morais Smith

Co-supervisor 1: Lars Fritz

Theory of non-Hermitian topology

Scanning probe spectroscopy of 2D topological nanocrystals in the shell-tunneling regime (states empty) will reveal the energy of the single-electron topological gap, the energy of the helical state and the spatial extension and orbital character of the edge states. Otherwise, signatures of state-filling below that expected for equilibrium indicates charge leakage from the helical state into the bulk or environment. Hence, from advanced scanning tunneling experiments, a first idea of the robustness of the quantum spin Hall state and its electronic isolation can be obtained.

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