Magnetism in two-dimensional (2D) van der Waals (vdW) materials has recently emerged as
one of the most promising areas in condensed matter research, with many exciting emerging …

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

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

The bosonic analogs of topological insulators have been proposed in numerous theoretical
works, but their experimental realization is still very rare, especially for spin systems …

Rectified electric current induced by irradiating light, a so-called photocurrent, is an
established phenomenon in optoelectronic physics. In this paper, we present a …

Two-dimensional (2D) semiconductors (SCs) integrated with two or more functions are the
cornerstone for constructing multifunctional nanodevices but remain largely limited. Here, by …

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 …

Condensed matter systems admit topological collective excitations above a trivial ground
state, an example being Chern insulators formed by Dirac bosons with a gap at finite …

Topological magnons are bosonic analogues of topological fermions in electronic systems.
They have been studied extensively by theory but rarely realized by experiment. Here, by …

The discovery of massless Dirac electrons in graphene and topological Dirac-Weyl materials
has prompted a broad search for bosonic analogues of such Dirac particles. Recent …