Inhomogeneous superconductors can host electronic excitations, known as Andreev bound
states (ABSs), below the superconducting energy gap. With the advent of topological …

A topological superconductor is characterized by having a pairing gap in the bulk and
gapless self-hermitian Majorana modes at its boundary. In one dimension, these are zero …

We propose a tune-free scheme to realize Kramers pairs of Majorana bound states in
recently discovered higher-order topological insulators (HOTIs). We show that, by bringing …

In this Tutorial, we give a pedagogical introduction to Majorana bound states (MBSs) arising
in semiconducting nanostructures. We start by briefly reviewing the well-known Kitaev chain …

Semiconducting quantum wires defined within two-dimensional electron gases and strongly
coupled to thin superconducting layers have been extensively explored in recent …

We consider superconductor-normal-superconductor-normal-superconductor (SNSNS)
planar Josephson junctions in hole systems with spin-orbit interaction that is cubic in …

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 consider a hybrid quantum Hall-superconductor system, where a superconducting finger
with oblique profile is wedged into a two-dimensional electron gas in the presence of a …

Semiconductor nanowires have been playing a crucial role in the development of nanoscale
devices for the realization of spin qubits, Majorana fermions, single photon emitters …

We consider a system consisting of two tunnel-coupled two-dimensional topological
insulators proximitized by a top and bottom superconductor with a phase difference of π …