摘要
Exploring unconventional topological quasiparticles and their associated exotic physical properties has become a hot topic in condensed matter physics,thus stimulating extensive interest in recent years.Here,in contrast to the double-Weyl phonons(the topological chiral charge+2)in the trigonal and hexagonal crystal systems,we propose that the unconventional double-Weyl without counterparts in high-energy physics can emerge in the phonons of cubic structures,i.e.,SrSi_(2).
基金
This work is supported by the Guangdong Natural Science Funds for Distinguished Young Scholars(No.2017B030306008)
the National Natural Science Foundation of China(Nos.11974160,11674148,and 11334003)
the China Postdoctoral Science Foundation(No.2019M652686)
the Natural Science Basic Research Plan in Shaanxi Province of China(No.2018JQ1083)
the Center for Computational Science and Engineering of Southern University of Science and Technology.
