One-dimensional helical liquids can appear at boundaries of certain condensed matter
systems. Two prime examples are the edge of a quantum spin Hall insulator and the hinge …

We report a topological phase transition in quantum-confined cadmium arsenide (Cd 3 As 2)
thin films under an in-plane Zeeman field when the Fermi level is tuned into the topological …

The most interesting experimental results obtained in studies of 2D and 3D topological
insulators (TIs) based on HgTe quantum wells and films are reviewed. In the case of 2D TIs …

The electrons in the edge channels of two-dimensional topological insulators can be
described as a helical Tomonaga-Luttinger liquid. They couple to nuclear spins embedded …

Helical edge modes of 2D topological insulators are supposed to be protected from time-
reversal invariant elastic backscattering. Yet substantial deviations from the perfect …

The two-dimensional topological insulator phase has been observed previously in single
HgTe-based quantum wells with inverted subband ordering. In double quantum wells …

We experimentally investigate spin-polarized electron transport between two ferromagnetic
contacts, placed at the edge of a two-dimensional electron system with band inversion. The …

Magnetic impurities with sufficient anisotropy could account for the observed strong
deviation of the edge conductance of 2D topological insulators from the anticipated …

We introduce a versatile heterostructure harboring various topological superconducting
phases characterized by the presence of helical, chiral, or unidirectional edge states …

A quantum magnetic impurity of spin S at the edge of a two-dimensional time reversal
invariant topological insulator may give rise to backscattering. We study here the shot noise …