5 papers · 1 filter
Noncentrosymmetric topological Dirac semimetals in three dimensions
Heng Gao, Jeremy Strockoz, Mario Frakulla +2
Topological Dirac semimetals are a class of semimetals that host symmetry-protected Dirac points near the Fermi level, which arise due to a band inversion of the conduction and val…
Linear and nonlinear optical responses in the chiral multifold semimetal RhSi
Zhuoliang Ni, B. Xu, M. A. Sanchez-Martinez +8
Chiral topological semimetals are materials that break both inversion and mirror symmetries. They host interesting phenomena such as the quantized circular photogalvanic effect (CP…
Optical signatures of multifold fermions in the chiral topological semimetal CoSi
B. Xu, Z. Fang, M. A. Sánchez-Martínez +12
We report the optical conductivity in high-quality crystals of the chiral topological semimetal CoSi, which hosts exotic quasiparticles known as multifold fermions. We find that th…
Ideal near-Dirac triple-point semimetal in III-V semiconductor alloys
Zhenyao Fang, Heng Gao, Jörn W. F. Venderbos +1
Despite the growing interest in topological materials, the difficulty of experimentally synthesizing and integrating them with other materials has been one of the main barriers res…
The Dirac-Weyl semimetal: Coexistence of Dirac and Weyl fermions in polar hexagonal crystals
Heng Gao, Youngkuk Kim, Jörn W. F. Venderbos +4
We propose that the noncentrosymmetric LiGaGe-type hexagonal crystal SrHgPb realizes a new type of topological semimetal that hosts both Dirac and Weyl points in momentum spa…