The topological phenomenon has been extensively studied in condensed matter physics
and has attracted much attention in many different fields. Like electrons, phonons can also …

Recently, emerging phonon phenomena have been discovered and rapidly developed,
which have become an active hot research topic. In this review article, we present state-of …

Nowadays, it is recognized that semiconductors are prospective candidates for promising
thermoelectric materials and the gapless topological phonon modes can result in a high …

In recent years, charge-two Weyl point phonons (WPPs) have attracted increasing attention.
Charge-two WPPs not only provide a new platform for realizing phonon-based …

Recently, Wang et al.[Phys. Rev. B 106, 195129 (2022) 2469-9950 10.1103/PhysRevB.
106.195129] challenged a widely held belief in the field of Weyl physics, demonstrating that …

Symmetry formulated by group theory plays an essential role with respect to the laws of
nature, from fundamental particles to condensed-matter systems. Here, by combining …

In this paper, we used symmetry analyses and first-principles calculations to discover seven
Cs-Te binary systems that have different crystal structures and can host symmetry-enforced …

By using ab initio calculations and symmetry analysis, we define a class of Weyl phonons:
charge-four Weyl phonons (CFWPs) characterized by Chern number±4 in their acoustic …

Topological semimetal states having the minimal number, ie, only a single pair, of Weyl
points are desirable for the study of effects associated with chiral topological charges. So far …

This year, researchers have been on the lookout for real materials with one-nodal, two-nodal
(two-NS), and three-nodal surface phonons. However, materials with two-NS phonons have …