Dirac and Weyl semimetals both exhibit arclike surface states. However, whereas the surface Fermi arcs in Weyl semimetals are topological consequences of the Weyl points themselves, the surface Fermi arcs in Dirac semimetals are not directly related to the bulk Dirac points, raising the question of whether there exists a topological bulkboundary correspondence for Dirac semimetals. In this work, we discover that strong and fragile topological Dirac semimetals exhibit onedimensional (1D) higherorder hinge Fermi arcs (HOFAs) as universal, direct consequences of their bulk 3D Dirac points. To predict HOFAs coexisting with topological surface states in solidstate Dirac semimetals, we introduce and layer a spinful model of an
We report a transport study on Pd_{3}In_{7}which displays multiple Dirac typeII nodes in its electronic dispersion. Pd_{3}In_{7}is characterized by low residual resistivities and high mobilities, which are consistent with Diraclike quasiparticles. For an applied magnetic field (
 NSFPAR ID:
 10474302
 Publisher / Repository:
 Nature Publishing Group
 Date Published:
 Journal Name:
 npj Quantum Materials
 Volume:
 8
 Issue:
 1
 ISSN:
 23974648
 Format(s):
 Medium: X
 Sponsoring Org:
 National Science Foundation
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