The discovery of the quantum spin Hall (QSH) state, and topological insulators in general,
has sparked strong experimental efforts. Transport studies of the quantum spin Hall state …

This paper presents a brief review of scanning-gate microscopy applied to the imaging of
electron transport in buried semiconductor quantum structures. After an introduction to the …

Scanning probe microscopy (SPM) refers to a family of techniques that have become
essential to study many different properties of materials and devices at the nanoscale. All of …

Quantum point contacts exhibit mysterious conductance anomalies in addition to well-known
conductance plateaus at multiples of 2 e 2/h. These 0.7 and zero-bias anomalies have been …

Graphene charge carriers behave as relativistic massless fermions, thereby exhibiting a
variety of counterintuitive behaviors. In particular, at pn junctions, they behave as photons …

The weak disorder potential seen by the electrons of a two-dimensional electron gas in high-
mobility semiconductor heterostructures leads to fluctuations in the physical properties and …

A systematic theory of the conductance measurements of noninvasive (weak probe)
scanning gate microscopy is presented that provides an interpretation of what precisely is …

The conductance change due to a local perturbation in a phase-coherent nanostructure is
calculated. The general expressions to first and second order in the perturbation are applied …

We present a machine-learning approach that allows to characterize the disorder potential
of a two-dimensional electronic system from its quantum transport properties. Numerically …

We consider quantum point contact (QPC) defined within a disordered two-dimensional
electron gas as studied by scanning gate microscopy. We evaluate the conductance maps in …