Topological phononics is cataloged: A screening approach identifies promising materials for future exploration
成果类型：
Editorial Material
署名作者：
Narang, Prineha; Arora, Arpit
署名单位：
University of California System; University of California Los Angeles; University of California System; University of California Los Angeles
刊物名称：
SCIENCE
ISSN/ISSBN：
0036-12459
DOI：
10.1126/science.adp3736
发表日期：
2024-05-10
页码：
626-626
关键词：
摘要：
Topological materials-solids whose properties are invariant under changes in conditions (such as external perturbation)-are of interest because of their applications in high-speed electronics and quantum computing. Research on topological materials has focused mainly on electronic systems ( 1 , 2 ). But solids host numerous collective excitations, including phonons, which are vibrations that pass from atom to atom in a lattice. The intersection of topology and phonons has opened a new field of topological phononics. A better understanding of topological phonons could drive advances in thermoelectric devices and superconductivity. However, a survey of materials that support topological phonons has been lacking. On page 638 of this issue, Xu et al. ( 3 ) report on more than 10,000 topological phononic material candidates. Using high-throughput computation, topological quantum chemistry, and key empirical evidence (sometimes called chemical intuition), their study provides an extensive topological classification of phonon bands (vibrational spectra) for each material, which should accelerate materials by design.