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quant-ph2026
Tuning topological phases and exceptional points in a non-Hermitian Rice Mele model beyond nearest neighbors
Carolina Martinez-Strasser, Dario Bercioux, Nico Leumer
Exceptional points are degeneracies characteristic of non-Hermitian operators, where eigenvalues and eigenvectors coalesce, rendering the Hamiltonian defective. We investigate the…
cond-mat.mes-hall2026
Transcendental momentum quantization in semiconducting Rashba nanowires and zero energy states in their normal and superconducting phase
Nico Leumer, Harald Schmid, Milena Grifoni +1
We study finite system properties of the canonical low energy model for a semiconducting nanowire with Rashba spin-orbit coupling. The case of an isolated wire as well as of one pr…