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

Dissipation in mechanics, optics, acoustics, and electronic circuits is nowadays recognized
to be not always detrimental but can be exploited to achieve non-Hermitian topological …

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 …

The discovery of topologically protected boundary states in topological insulators opens a
new avenue toward exploring novel transport phenomena. The one-way feature of boundary …

Topological magnon insulators (TMI) are ordered magnets supporting chiral edge magnon
excitations. These edge states are envisioned to serve as topologically protected information …

Magnonics or magnon spintronics is an emerging field focusing on generating, detecting,
and manipulating magnons. As charge‐neutral quasi‐particles, magnons are promising …

Linear spin wave theory (LSWT) is the standard technique to compute the spectra of
magnetic excitations in quantum materials. In this Letter, we show that LSWT, even under …

We consider two distant spin qubits in quantum dots, both coupled to a two-dimensional
topological ferromagnet hosting chiral magnon edge states at the boundary. The chiral …

Topologically protected magnon surface states are highly desirable as an ideal platform to
engineer low-dissipation spintronics devices. However, theoretical prediction of topological …

The study of symmetry-protected topological phases of matter has been extended from
fermionic electron systems to various bosonic systems. Bosonic topological magnon phases …