We employed ab initio calculations to identify a class of crystalline materials of M Si (M= Fe,
Co, Mn, Re, Ru) having double-Weyl points in both their acoustic and optical phonon …

The topological metal states in electronic systems have been extensively studied, but
topological phonons were explored only in a few examples so far. Here, we expose that the …

Topological phonons in crystalline materials have been attracting great interest. Most cases
studied so far are direct generalizations of the topological states from electronic systems …

We perform both lattice dynamics analysis and molecular dynamics simulations to
demonstrate the existence of topologically protected phonon modes in two-dimensional …

Unconventional topological quasiparticles have recently garnered significant attention in the
realm of condensed matter physics. Here, based on first-principles calculations and …

Theories of symmetry-based indicators and topological quantum chemistry, while powerful
in diagnosing gapped topological materials, cannot be directly applied to diagnosing band …

The topological phonon state of quantum matter is an emerging field that has been attracting
considerable interest. For instance, Weyl phonons in transition-metal monosilicides have …

The exploration of various topological nodal-line phonons with novel topological properties
and unique geometrical configurations has long been considered one of the central topics in …

Chiral crystals have recently garnered significant interest in condensed matter physics due
to their unique electronic and optical properties. In this paper, we explore the connection …

Though symmetry-based indicators formulae are powerful in diagnosing topological states
with a gapped band structure at/between any high-symmetry points, it fails in diagnosing …