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Title: Ideal hourglass-type charge-three Weyl fermions in spinless systems
Authors: Xiao, Xiaoliang
Jin, Yuanjun
Ma, Da-Shuai
Kong, Weixiang
Fan, Jing
Wang, Rui
Wu, Xiaozhi
Keywords: Physics
Issue Date: 2024
Source: Xiao, X., Jin, Y., Ma, D., Kong, W., Fan, J., Wang, R. & Wu, X. (2024). Ideal hourglass-type charge-three Weyl fermions in spinless systems. Physical Review B, 109(7), 075160-.
Journal: Physical Review B 
Abstract: Hourglass-Type Weyl fermions with the maximally topological charge of |C|=3, namely hourglass-Type charge-Three Weyl fermions (CTWFs), have seldom been reported due to the nonnegligible spin-orbit coupling effect and Pauli exclusion principles. Here, based on symmetry arguments and the low-energy effective k·p model, we confirm that two chiral space groups (SGs), i.e., SG P63 (No. 173) and SG P6322 (No. 182), can host ideal hourglass-Type CTWFs in spinless systems. Moreover, we take Li2CO4 as a concrete example to show the ideal hourglass-Type CTWFs, which possess ultralong sextuple-and triple-helicoid Fermi arcs, making them easier to be detected by experiments. Our work not only offers an avenue to search for ideal hourglass-Type CTWFs but also provides a promising platform for experiments to verify this kind of unconventional quasiparticles with the ultralong sextuple-and triple-helicoid surface arcs.
ISSN: 2469-9950
DOI: 10.1103/PhysRevB.109.075160
Schools: School of Physical and Mathematical Sciences 
Rights: © 2024 American Physical Society. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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