Atomically thin topological materials are attracting growing attention for their potential to
radically transform classical and quantum electronic device concepts. Among them is the …

In a topological insulator (TI) the character of electron transport varies from insulating in the
interior of the material to metallic near its surface. Unlike, however, ordinary metals …

Electrical currents in a quantum spin Hall insulator are confined to the boundary of the
system. The charge carriers behave as massless relativistic particles whose spin and …

A single pair of helical edge states as realized at the boundary of a quantum spin Hall
insulator is known to be robust against elastic single particle backscattering as long as time …

We show how the coupling between opposite edge states, which overlap in a constriction
made of the topological insulator mercury telluride (HgTe), can be employed both for …

We investigate electron interferometry of edge states in topological insulators. We show that
when interboundary coupling is induced at two quantum point contacts of a four terminal …

Topology in condensed matter physics manifests itself in the emergence of edge or surface
states protected by underlying symmetries. We review two-dimensional topological …

Topological superconductors give rise to unconventional superconductivity, which is mainly
characterized by the symmetry of the superconducting pairing amplitude. However, since the …

Parafermions are generalizations of Majorana fermions that may appear in interacting
topological systems. They are known to be powerful building blocks of topological quantum …

We investigate the electrical switching of charge and spin transport in a topological insulator
nanoconstriction in a four-terminal device. The switch of the edge channels is caused by the …