One of the fundamental properties of semiconductors is their ability to support highly tunable
electric currents in the presence of electric fields or carrier concentration gradients. These …

Topological insulators have become one of the most active research areas in condensed
matter physics. This article reviews progress on the topic of electronic correlation effects in …

The quantum spin Hall (QSH) state is a state of matter characterized by a non-trivial topology
of its band structure, and associated conducting edge channels,,,,. The QSH state was …

A bstract Several models of physics beyond the Standard Model predict neutral particles that
decay into final states consisting of collimated jets of light leptons and hadrons (so-called …

We study the influence of electron puddles created by doping of a 2D topological insulator
on its helical edge conductance. A single puddle is modeled by a quantum dot tunnel …

We evaluate the low-temperature conductance of a weakly interacting one-dimensional
helical liquid without axial spin symmetry. The lack of that symmetry allows for inelastic …

Topological insulators (TIs) have an insulating bulk but a metallic surface. In the simplest
case, the surface electronic structure of a three-dimensional (3D) TI is described by a single …

Transport in InAs/GaSb heterostructures with different InAs layer thicknesses is studied
using a six-terminal Hall bar geometry with a 2-μ m edge channel length. For a sample with …

We observe edge transport in the topologically insulating InAs/GaSb system in the
disordered regime. Using asymmetric current paths we show that conduction occurs …

Time-reversal symmetry prohibits elastic backscattering of electrons propagating within a
helical edge of a two-dimensional topological insulator. However, small band gaps in these …