title: Symmetry-protected ideal Weyl semimetal in HgTe-class materials.
abstract: Ideal Weyl semimetals with all Weyl nodes exactly at the Fermi level and no coexisting trivial Fermi surfaces in the bulk, similar to graphene, could feature deep physics such as exotic transport phenomena induced by the chiral anomaly. Here, we show that HgTe and half-Heusler compounds, under a broad range of in-plane compressive strain, could be materials in nature realizing ideal Weyl semimetals with four pairs of Weyl nodes and topological surface Fermi arcs. Generically, we find that the HgTe-class materials with nontrivial band inversion and noncentrosymmetry provide a promising arena to realize ideal Weyl semimetals. Such ideal Weyl semimetals could further provide a unique platform to study emergent phenomena such as the interplay between ideal Weyl fermions and superconductivity in the half-Heusler compound LaPtBi.
authors.affiliation: National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
authors.forename: Jiawei
authors.initials: J
authors.lastname: Ruan
authors.affiliation: Institute for Advanced Study, Tsinghua University, Beijing 100084, China.
authors.forename: Shao-Kai
authors.initials: SK
authors.lastname: Jian
authors.affiliation: Institute for Advanced Study, Tsinghua University, Beijing 100084, China.|Collaborative Innovation Center of Quantum Matter, Beijing 100084, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Yao
authors.affiliation: National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
authors.forename: Haijun
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Department of Physics, Stanford University, Stanford, California 94305, USA.
authors.forename: Shou-Cheng
authors.initials: SC
authors.lastname: Zhang
authors.affiliation: National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
authors.forename: Dingyu
authors.initials: D
authors.lastname: Xing