Type-II Dirac semimetals in the YPd${}_2$Sn class

Abstract

The Lorentz-invariance-violating Weyl and Dirac fermions have recently attracted intensive interests as new types of particles beyond high-energy physics, and they demonstrate novel physical phenomena such as angle-dependent chiral anomaly and topological Lifshitz transition. Here we predict the existence of Lorentz-invariance-violating Dirac fermions in the YPd${}_2$Sn class of Heusler alloys that emerge at the boundary between the electron-like and hole-like pockets in the Brillouin zone, based on the first-principles electronic structure calculations. In combination with the fact that this class of materials was all reported to be superconductors, the YPd${}_2$Sn class provides an appropriate platform for studying exotic physical properties distinguished from conventional Dirac fermions, especially for realizing possible topological superconductivity.

arXiv comment6 pages, 5 figures, 1 table

References in corpus (42)

• Topological Insulators
• Topological insulators and superconductors
• Maximally-localized generalized Wannier functions for composite energy bands
• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface
• Type-II Weyl Semimetals
• Weyl Semimetal in a Topological Insulator Multilayer
• Maximally-localized Wannier functions for entangled energy bands
• Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)
• Dirac semimetal in three dimensions
• Topological nodal semimetals
• Three Dimensional Dirac Semimetal and Quantum Transports in Cd3As2
• Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
• Tunable Multifunctional Topological Insulators in Ternary Heusler Compounds
• Experimental observation of topological Fermi arcs in type-II Weyl semimetal MoTe2
• A new platform for topological quantum phenomena : Topological Insulator states in thermoelectric Heusler-related ternary compounds
• Antiferromagnetic topological insulators
• Prediction of the Weyl semimetal in the orthorhombic MoTe2
• Spectroscopic evidence for type II Weyl semimetal state in MoTe2
• Observation of the Type-II Weyl Semimetal Phase in MoTe2
• MoTe2: A Type-II Weyl Topological Metal
• Time-reversal invariant realization of the Weyl semimetal phase
• Half-Heusler Compounds as a New Class of Three-Dimensional Topological Insulators
• Observation of Fermi Arcs in Type-II Weyl Semimetal Candidate WTe2
• Structured Weyl Points in Spin-Orbit Coupled Fermionic Superfluids
• Type-II Dirac fermions in the PtSe${}_2$ class of transition metal dichalcogenides
• Arc-tunable Weyl Fermion metallic state in Mo${}_x$W${}_{1-x}$Te${}_2$
• Superconductivity in the topological semimetal YPtBi
• Spectroscopic Evidence of Type II Weyl Semimetal State in WTe2
• Half-Heusler Topological Insulators: A First-Principle Study with the Tran-Blaha Modified Becke-Johnson Density Functional
• Observation of Large Topologically Trivial Fermi-Arcs in the Candidate Type-II Weyl Semimetal WTe2
• Existence of bulk chiral fermions and crystal symmetry
• Superconductivity in the noncentrosymmetric half-Heusler compound LuPtBi : A possible topological superconductor
• Weak Antilocalization Effect and Noncentrosymmetric Superconductivity in a Topologically Nontrivial Semimetal LuPdBi
• Unconventional superconductivity in YPtBi and related topological semimetals
• Magnetic structure of GdBiPt: A candidate antiferromagnetic topological insulator
• Electronic Evidence for Type II Weyl Semimetal State in MoTe2
• Discovery of Weyl semimetal state violating Lorentz invariance in MoTe2
• Magnetic structure of the antiferromagnetic half-Heusler compound NdBiPt
• Stabilization of Majorana modes in vortices in the superconducting phase of topological insulators using topologically trivial bands
• Tri-Dirac Surface Modes in Topological Superconductors
• Type-II Topological Dirac Semimetals: Theory and Materials Prediction (VAl3 family)

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