At sufficiently low temperatures, magnetic materials often enter correlated phases hosting
collective, coherent magnetic excitations such as magnons or triplons. Drawing on the …

Weyl and Dirac semimetals are three-dimensional phases of matter with gapless electronic
excitations that are protected by topology and symmetry. As three-dimensional analogs of …

A second-order topological insulator in d dimensions is an insulator which has no d-1
dimensional topological boundary states but has d-2 dimensional topological boundary …

In two-dimensional honeycomb ferromagnets, bosonic magnon quasiparticles (spin waves)
may either behave as massless Dirac fermions or form topologically protected edge states …

The recent demonstrations of electrical manipulation and detection of antiferromagnetic
spins have opened up a new chapter in the story of spintronics. Here, we review the …

The discovery of the quantum spin Hall effect and topological insulators more than a decade
ago has revolutionized modern condensed matter physics. Today, the field of topological …

We have given a summary on our theoretical predictions of three kinds of topological
semimetals (TSMs), namely, Dirac semimetal (DSM), Weyl semimetal (WSM) and node-line …

Pursuing topological phases in natural and artificial materials is one of the central topics in
modern physical science and engineering. In classical magnetic systems, spin waves (or …

The implementation of a single magnon level quantum manipulation is one of the
fundamental targets in quantum magnetism with a significant practical relevance for …

We report the discovery of topological magnetism in the candidate magnetic Weyl semimetal
CeAlGe. Using neutron scattering we find this system to host several incommensurate …