Topological materials discovery has evolved at a rapid pace over the past 15 years following
the identification of the first nonmagnetic topological insulators (TIs), topological crystalline …

One of the most exciting areas of research in quantum condensed matter physics is the push
to create topologically protected qubits using non-Abelian anyons. The focus of these efforts …

The mathematical field of topology has become a framework in which to describe the low-
energy electronic structure of crystalline solids. Typical of a bulk insulating three …

Second-order topological insulators are crystalline insulators with a gapped bulk and
gapped crystalline boundaries, but with topologically protected gapless states at the …

Superconducting proximity pairing in helical edge modes, such as those of topological
insulators, is predicted to provide a unique platform for realizing Majorana zero modes …

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 insulating crystals, it was previously shown that defects with two fewer dimensions than
the bulk can bind topological electronic states. We here further extend the classification of …

In a standard Josephson junction the current is zero when the phase difference between
superconducting leads is zero. This condition is protected by parity and time-reversal …

Topological superconductivity holds promise for fault-tolerant quantum computing. While
planar Josephson junctions are attractive candidates to realize this exotic state, direct phase …

We report measurements of the current-phase relation of two voltage-controlled
semiconductor-superconductor hybrid Josephson junctions (JJs) in series. The two hybrid …